LOL! When we go on vacation, my kids make up this whole schedule of who is sleeping with whom when. DH and I never know who we'll be sleeping with.
Last year we needed to stay at one particular Embassy Suites and all they had left were rooms with a king bed and a sofa sleeper. It was just one night, so we thought it would be fine for our youngest to sleep in the king with us. It wasn't until bedtime that DS (12) and DD(10) realized that they were sleeping together. Major complaints.
I'm really surpised that more hotels don't have enough beds for 5 or 6. My friend is a widow and her DD is 15 and her DS is 12. Neither will sleep with her and they sure won't sleep with each other. So even though there are only 3 of them, they really need accomodations with 3 beds.