What is a guarantee cabin, and should you book one?

What does a guarantee cabin mean on a cruise?

A guarantee cabin (often shown as GTY, or called a run-of-ship fare) is a booking where you choose the type of cabin but not the cabin itself. You might book an interior guarantee or a balcony guarantee, and the cruise line assigns a specific cabin number later.

The guarantee part is the promise: you'll get a cabin in the category you paid for or a better one. You won't be moved down. In exchange for letting the line decide, guarantee fares are often a little cheaper than selecting a cabin yourself, and they're sometimes available when every selectable cabin in that category appears sold out.

How guarantee cabins work

Cruise lines use guarantee fares to fill ships efficiently. Selling some cabins without fixed numbers gives the line flexibility to shuffle passengers as the ship fills, so it can release the cabins that are hardest to sell, or move guarantee guests up into a higher category that has more space.

Cabin assignment can happen weeks or months before you sail, or in the final days. Occasionally you won't know your cabin number until you check in at the terminal. Once a cabin is assigned, it's normally final; lines generally won't let a guarantee guest swap cabins for free.

• You book a category (interior, oceanview, balcony and so on) with no cabin number.
• The line assigns a cabin in that category or higher at a time of its choosing.
• Your booking documents and luggage tags update once a cabin number exists.
• The assignment is usually final, though some lines let you pay to move to a specific cabin.

Can you get a free upgrade with a guarantee cabin?

Sometimes, but don't count on it. If the line has sold more cabins in your category than it has left, it may place guarantee guests in a higher one: an oceanview guarantee could become a balcony, for example. That's the main reason many cruisers like guarantees.

Upgrades depend entirely on how the sailing sells, so they're more likely when a ship has empty cabins in higher categories and less likely on sold-out holiday and summer sailings. Many guarantee guests simply get a cabin in the category they booked, sometimes in a less popular spot.

Guarantee upgrades are different from upgrade bidding programs such as Royal Caribbean's RoyalUp or Celebrity's MoveUp, where you offer a price for a better cabin. Those are separate, optional and work whether or not you booked a guarantee.

The risks: where a guarantee cabin might put you

The downside is simple: the cabin you get may be in a location you'd never have chosen. Lines tend to fill the most desirable spots with guests who paid to select them, so guarantee guests can end up in the leftovers.

Read the guarantee terms before you pay, including whether a cabin with a partly obstructed view could be assigned within your category. Terms differ by line and are worth two minutes of your time.

• Far forward, where motion is strongest in rough seas.
• A very high or very low deck, or at the far end of a long corridor.
• Under the pool deck, above a nightclub or theater, or next to a busy service area.
• Close to elevators or a stair landing with constant foot traffic.
• A cabin with a connecting door to a neighbor, which lets more sound through.
• Far from friends or family you booked with separately.

Interior, oceanview or balcony guarantee: which is the safest bet?

An interior guarantee usually carries the least risk, because interior cabins within a category are very similar and the only real variable is location. With windows and balconies, there's more variation between cabins in the same category, so there's more to gain from choosing yourself.

With an oceanview guarantee, the window could be a large picture window or a smaller porthole on a lower deck, depending on the ship. With a balcony guarantee, the cabin itself is usually standard, but balcony depth and the view can vary, and you're unlikely to be handed one of the coveted deep aft-facing balconies, which experienced cruisers tend to select early.

Suite guarantees exist on some lines, mostly at the junior suite level. Because suite perks and layouts vary so much, it's usually worth choosing a suite yourself when you're paying that much.

Who should book a guarantee cabin?

A guarantee works best for flexible travelers who mostly care about the price and the cabin type, not the exact spot. If you'll be out exploring all day, don't mind a walk to the elevator and aren't bothered by motion, the savings and the chance of an upgrade can make it a smart choice.

Couples and solo travelers on short Caribbean or Bahamas sailings are typical guarantee bookers. So are people who decide to cruise late and find that selectable cabins in their preferred type are gone, but a guarantee is still on sale.

Who should avoid guarantee cabins?

Skip the guarantee if a particular location is important to you, or if you need a specific type of room within a category. Paying a little more to choose is cheap insurance against a week of poor sleep or queasy mornings.

• Anyone prone to seasickness, who should choose a low, midship cabin themselves.
• Light sleepers who want to avoid noisy decks above and below.
• Families who need connecting or adjacent cabins, or a cabin with enough beds in the right layout.
• Groups who want to be near each other on the ship.
• Travelers who need an accessible cabin, which should always be booked as a specific cabin with the line's accessibility team.
• People who want something specific, like an aft-facing balcony with a wake view or a cabin near the kids club.

Guarantee vs choosing your cabin: how to decide

Compare the two prices for the same category side by side. If the guarantee saves you very little, choosing your own cabin is usually worth it. If the difference is meaningful and none of the red flags above apply to you, the guarantee is a reasonable bet.

Also look at how full the ship appears. On a sailing that still has plenty of choice in higher categories, an upgrade is more plausible. On a peak-season sailing that's nearly sold out, expect the category you booked and possibly a less desirable location.

• Check whether the guarantee fare has different cancellation or change rules from a regular fare.
• Confirm how many guests the guarantee covers; a cabin for three or four needs enough berths, and those are limited.
• Note your bed preference with the line; most standard cabins can be set up as twins or a queen, but tell them in advance.
• Once your cabin number appears, look it up on the deck plan so there are no surprises on embarkation day.

Frequently asked questions