Has anyone done this? I called DCL and they said we could. I made these reservations 2 years ago and things have changed (don't worry...we all still get along) I know that once your are on the ship it doesn't matter how you sleep. But if you don't have a key to the room you are sleeping in that makes it hard. Plus if you just swap keys and one is underage you can't order a drink with that one. Not a big concern but an inconvenience. So DCL said once you get to port they can change the keys to work with the rooms you want to sleep in. And the reason I can't change the arrangements now is because with their computers it wants to charge us a penalty since we are just 22 days out Thanks for any input!