This means you can book a cabin with a guaranteed grade but no cabin number.
Your cabin number will be allocated to you by the cruise-line at any time up to the date of departure.
You may receive a free upgrade to a higher category of cabin that may be on a different deck or different area of the ship to the grade booked.
Guaranteed cabins are automatically assigned by the cruise-line and cannot be amended or declined; special requests such as location and bedding configuration cannot be made.
If you have a specific request for your cabin or cabin location we would recommend you do not book a guaranteed cabin.