M.C.
We had this problem with our daughter this summer also. She won't sleep in bed with us either, she thinks it is playtime. So the first trip was just a one-nighter and I ended up nursing her to get her back to sleep but she was waking every hour. SO MISSERABLE!
So in prep for our 2 week long trip, I started the week before and put her down for bed in her pack in play in her own room here at home for all of her naps. This worked and when we went to the beach, she was fine sleeping in the pack and play the whole time. That week before wasn't fun, but after a few days, she seemed to get the message.