Almost every article on this subject explains the 4 tiers and stops there, which is the least useful part of a decision that actually turns on square metres, berth configurations and the deck above your head. The deck plans and stateroom pages carry square metres, berth configurations, deck ranges and booking mechanics, and those are the things that decide whether the room works for you. This is cruise cabin types set out in square metres rather than adjectives.
The cabin is the single biggest line on a cruise booking and the one people spend the least time on, usually because the categories are named in marketing language and the numbers are buried. They aren't actually buried. Both lines put out a great deal, in different places and in different formats, and once you know which page holds which number the decision takes about 20 minutes. What follows is every cruise stateroom explained from the lines' own figures rather than from adjectives.
Start with the shape. Every line sorts its rooms into 4 tiers, cheapest first: interior, oceanview, balcony, suite. That's the whole of what most people are told, and it hides about a dozen categories that sit between those 4. Most of the real cruise cabin types live in the gaps.
One line also layers an "experience" on top of the room type, so a balcony cabin comes in several versions that differ by what's included rather than by the room. That's worth knowing before you compare 2 balcony fares and wonder why they're different, and it's the first thing to settle when you're working out which cruise cabin to book.
This is the practical finding of the whole exercise, and it saves an hour on its own: the 2 lines publish their dimensions in completely different places. Getting a cruise stateroom explained properly starts with knowing which page to open.
Here's what a full per-ship table of cruise cabin types looks like, from 1 line's own page for a Meraviglia-class ship. Balcony area is broken out separately, which is exactly the number people assume and never check.
| Category | Cabin | Balcony | Decks |
|---|---|---|---|
| Studio | 10 m² | — | 5–14 |
| Junior Ocean View | ~12 m² | — | 8 |
| Studio Balcony | 12 m² | 4 m² | 13–14 |
| Deluxe Interior | 15 m² | — | 5–10 |
| Deluxe Ocean View | ~16 m² | — | 5 |
| Deluxe Balcony | 17 m² | 4 m² | 8–10 |
| Premium Ocean View | ~22 m² | — | 9–11 |
| Premium Balcony | 22 m² | 6 m² | 9–10 |
| Premium Suite with Terrace | 27 m² | ~26–30 m² | 9–13 |
| Grand Suite with Terrace | 39 m² | ~36 m² | 12 |
Now compare that ship against 2 others in the same fleet, and this is the bit that matters when you book by category name.
| Category | Meraviglia class | World class | Seaside class |
|---|---|---|---|
| Deluxe Interior | 15 m² | 15 m² | 14 m² |
| Deluxe Balcony, cabin | 17 m² | 17 m² | 17 m² |
| Deluxe Balcony, the balcony | 4 m² | 3 m² | 5 m² |
| Solo studio | 10 m² | 10 m² | Not offered |
The cabin is the same on all 3 and the balcony varies by two-thirds. If the balcony is the reason you're upgrading, that's the number to look up, and it's on every ship page. Nothing else in the inside cabin vs balcony argument is this easy to check.
The other line gives its sizes in 2 places and the 2 don't match, so take both rather than either when you're deciding which cruise cabin to book.
| Category | Fleet page | Its own guide |
|---|---|---|
| Interior | Up to 340 sq ft, up to 6 guests | 101 to 340 sq ft, 2 to 4 guests |
| Ocean View | Up to 354 sq ft, up to 8 guests | About 300 sq ft, 2 to 4 guests |
| Balcony | Up to 298 sq ft, up to 8 guests | About 180 sq ft plus a 50 sq ft balcony |
| Suite | Up to 2,766 sq ft, up to 9 guests | Tiered from about 290 sq ft |
Those aren't errors so much as 2 different questions being answered: the fleet page gives the largest example anywhere in the fleet, the guide gives something closer to typical. Neither page says which. On its newest class it does give properly granular figures, and they're a useful reality check: a standard interior at 156 square feet, an oceanview balcony at 204 square feet plus a 50-square-foot balcony, an owner's suite at 658 square feet plus 190 outside. That's the figure a cruise suite guide should open with and rarely does.
Category names describe the view. What decides whether a room works is occupancy, berth type and the documented fit for how you're travelling, and all 3 are findable. Match those against how you actually travel and which cruise cabin to book stops being a guess.
1 line publishes dedicated solo cabins with dimensions: a 10-square-metre interior studio, and — unusually — a 12-square-metre studio with a 4-square-metre balcony. They appear on 2 of its classes and not on the third, which sits on the ship pages rather than in the solo marketing. For a single traveller that's the whole cruise stateroom explained in 2 numbers.
The other confirms studios exist on "select ships" and names none of them, gives no sizes, and states its single-occupancy mechanism plainly: fares are per person on double occupancy, so a solo guest taking a standard room pays the full 2-person total. That's why a studio matters rather than being a nice extra.
This is where the occupancy figures earn their keep, and where the inside cabin vs balcony question tends to get settled by arithmetic rather than preference.
Here 1 line gives a genuinely measured specification and the other gives a description, so the research effort differs a lot depending on which you're booking. For anyone in this position it's the section that decides which cruise cabin to book, ahead of the view.
The measured set covers a stateroom and bathroom door width of 32 to 34 inches, roughly 81 to 86 centimetres and vessel-dependent; a 5-foot turning radius, about 152 centimetres, in the sleeping, bathroom and sitting areas; roll-in and fold-down shower benches with hand-held showerheads; raised toilet seats of 17 to 19 inches, about 43 to 48 centimetres; no doorsill at the stateroom entrance; ramped bathroom thresholds; and lowered closet rods. Accessible rooms range from 159 to 298 square feet. Accessible suites have roll-in showers rather than bathtubs, with 1 named ship as the exception, and that detail appears in no cruise suite guide I've read.
The other lists handrails, ramps for balcony access, lower shelves, wet-room-style bathrooms and wider doors, without dimensions — but it does publish a hard limit that matters more than any of them: a wheelchair may not exceed 50 centimetres in width, must weigh no more than 45 kilograms, and must not exceed 50 centimetres folded.
Both require a form. 1 asks for a special needs form on booking, with 60 days' notice for interpreters, 30 days for equipment and services, and 72 hours for groups of 10 or more guests with disabilities. The other asks for its accessibility and medical form at booking and no later than 30 days before sailing, and allocates on a first come, first served basis. Neither publishes how many accessible rooms each ship has, which is the 1 figure you'd most like before booking. Getting an accessible cruise stateroom explained still means asking a human.
Full itineraries and cabin grades for Royal Caribbean sailings are on our cruise line page.
Everything above is about the room. The deck plan is about where the room is, it's free, it's online, and almost nobody opens it. It answers more of the inside cabin vs balcony question than the brochure does.
1 line's deck plans carry a printed legend that tells you, per cabin, whether it has a sofa bed, a third pullman, third and fourth pullmans, or 4 additional pullmans, plus which rooms connect, which are accessible and which have obstructed views. That single legend answers most of the questions people ask a call centre. It's a cruise stateroom explained by symbol rather than by prose.
The other line's deck plans are an interactive tool with no published symbol key I could find, so on that fleet the ship page's category table is where the answers are instead. Neither approach is wrong; they're just different documents, and knowing which one to open saves the guesswork. Both get you to the same place: cruise cabin types you can actually verify.
Look at the deck above the one you're booking. Here's a real example from a live plan.
On 1 ship, deck 9 holds the buffet restaurant, the main pool, the whirlpools, the solarium and the spa and fitness centre, and has no staterooms at all. Deck 8 immediately below it is all staterooms, from suites down to standard interiors. So every deck 8 cabin on that ship sits directly under the pool deck and the buffet.
The line says what that means in its own words: being beneath the pool deck can mean early morning noise as the crew sets up the deck chairs. It also flags 2 other things worth knowing from a plan — that areas which look empty or greyed out aren't empty, they're crew spaces, galleys and service lifts; and that mid-ship cabins have the least movement, which is its own advice for anyone prone to seasickness.
On the other fleet you can do the same check from the ship's deck list. On its Meraviglia class the cabins stop at deck 14 and the open decks start at 15, so deck 14 is the exposed row. On its Seaside class the main pool sits on deck 18 with cabins running above and below it, so the exposure lands differently and the check is worth repeating per ship. It's the last piece of a cruise stateroom explained by location rather than by category.
One thing I'm not going to tell you is that forward cabins are noisy because of the bow thrusters. It's repeated everywhere and neither line publishes a word about thruster locations or noise, so it stays out.
The 2 fleets handle this differently and both approaches are usable once you know which you're looking at. Neither should stop you deciding which cruise cabin to book, but both should slow you down for 5 minutes.
Booking a guarantee means choosing a category — inside cabin vs balcony, and no further — then letting the line pick the room. It's a real mechanism with written terms, and the terms are stricter than most people expect.
On 1 line the stated position is that the exact stateroom, number and location are allocated at the line's discretion, at any time up until sailing. Once allocated, it states plainly that it cannot accept changes requested by you. It may upgrade you to a superior category at its discretion and at no extra charge, and you are guaranteed the minimum category agreed at booking as a floor. That's the only free route into a suite any cruise suite guide can honestly point at. It also flags 3 specific risks: the room may have an obstructed view, it may have upper berths accessed by a ladder, and on 2 of its classes it may be an inward-facing neighbourhood balcony rather than an ocean-facing one. On back-to-back sailings you may be given different rooms and have to move on changeover day.
The other line runs its guarantee as its entry-level experience tier, and sets a hard deadline instead of an open-ended one: the cabin is assigned within 4 days of departure and you cannot choose the number. Its middle and upper tiers include the ability to choose the cabin and its location, which is what you're paying for as much as anything else.
That deadline difference is the single most useful thing in this section. On 1 fleet you may know 4 days out. On the other you may not know until you check in. Either way you've bought a category rather than a room, which is the honest cruise stateroom explained version of a guarantee.
Worth stating plainly because both booking pages state it themselves: no sailing bookable on either UAE page departs from a UAE port. You fly out and join the ship at a Mediterranean or Asian homeport, and flights aren't included unless the package says so.
That changes the cabin decision in 1 concrete way. You arrive at the terminal after a flight rather than a taxi, usually on the same day, and the room you walk into is the room you were in a long time before you reach it. If you were on the fence between an interior and something with daylight, the flight is the argument for daylight rather than against it. It's the only part of the inside cabin vs balcony decision that isn't about the ship.
Everything below comes off a published page. There's nothing here about booking windows or when fares move, because neither line publishes anything on that, and a cabin article that pretends otherwise is guessing. What follows is a set of written mechanics that decide which cruise cabin to book and that most people never read.
Which cruise cabin to book comes down to 3 numbers and 1 document. The 3 numbers are the cabin area, the balcony area and the maximum occupancy, all of them on the record, none of them visible on a search results page. The document is the deck plan, which tells you what's above you, what's beside you and whether the room takes a third person. That's the whole cruise stateroom explained.
Everything else — the tier names, the "up to" figures, the folklore in every cruise suite guide about lifeboats and thrusters — is noise sitting on top of a dataset that's already there. Look up the ship rather than the brand, check the balcony separately, and if you're booking a guarantee, book it knowing you've agreed to the category and nothing more. Do that and cruise cabin types stop being marketing and start being measurements.
Disclaimer - Cabin categories, dimensions, occupancy, accessibility specifications, deck plans and guarantee terms come from Royal Caribbean's and MSC Cruises' own pages and booking conditions, read in August 2026. Ships, classes, categories and terms change without notice; confirm against the ship you are booking before you commit.