MagicJunkie. we just did our second year at RPR using a twin air mattress for my 15yr old son. We only have two boys (18,15) but one is over 6' tall and on the thin side, but sprawls out all over! We put the air matt. over next to the window last year so it wasn't in walking path. Son brought own sheet/pillow from home and was so comfy he wanted to do the same this past Juy. Unfortunately, he's almost 5'6" now and his fit was a little tighter on the matt. For smaller kids the a.m. would work ok. Much better than getting a huge $25 per night rollaway put in the room.