OK we will be on a cruise and there will be a total of 4. The problem is that three people will sleep in one room and the other will sleep in the other room. The problem comes in with if you get a room for 1 person and then a room for 3 people is much more expensive than a room with 2 people in each. Can you we get a room for 2 people in each room and sleep the way we want to or will there be a problem because of the cabin attendants not getting the correct amount of tips?
You can make the arrangements for 2 in each cabin .... it doesn't matter how the final sleeping arrangements work out. If you're concerned about the tipping, have it removed from your sign and sail account and tip in cash instead.
The only problem you might run into is if the cabin is only designed for two people! If there isn't a third bed in that cabin.....? Maybe you can ask the steward if he could get you a rollaway but that does make it tight and they might not do it. Most cabins are only designed for two people with a certain number designed for three and some designed for four.
I would suggest booking your room and pick your own cabins - don't book a guarentee, so that they will be sure to have 3 beds -except one will probably be a upper bunk if you book inside. Or one will be a sofa bed if you book an outside or balcony. Just a thought.