I know of someone who took an inflatable air bed to a value resort because she had 2 very tall teenage boys with them who would not sleep in the same bed. It was no problem, you put it down at night, and set it aside in the morning. We also did this when my ds wasn't 3 yet, but was way too big to sleep in a crib. And we had 2 other kids with us. So I'm sure if you can get the roll-away, it won't be a problem.
Mary Liz