Adding a third person to the cabin at a later time is no problem, as long as the cabin can accommodate 3 people. Some cabins only have 2 berth. Make sure that your cabin booked has 3 berth.
Happy Cruising, Ginnie
Ginnie is correct, we did add a 4th person once and it was no problem, but sometimes they have the max number of pax, think it has something to do with the lifeboats. I would definately call your travel agent first and see if it is possible to add that extra cruiser.
That's correct! We tried it several years ago & were put on a wait list, but ended up making other arrangements. Also it might depend upon the age of the person you are adding. We recently received a great offer in the mail from Princess. I called to look into booking for our family as well as our friends' family. Because there are teens in our families, we could not get on the ship at all, even though they had the cabins with the extra berth available. They limit the # of teens on their ships, they said. Additionally we were once told by Royal Caribbean that if we waited too long we couldn't add a 4th person in a cabin w/4 berths because they do not fill every single berth on most of their ships. Carnival will often squeeze a roll away bed into a cabin. (Been there, done that. It's no fun. Just try getting to the bathroom in the middle of the night!) Sometimes your travel agent might have some clout, though, too. That's where to go for the answer in your case, just like Donna said.