So I snapped the mattresses after I folded up the beds. Now I will see what happens when I unfold them. I did not strap them in before hand because I am a creature of habit. I was in my routine and forgot. What I found interesting is the snaps on the straps at the top of the mattress are about 3 inches apart. The snaps on the bed are between 1 and 2 inches. Either these are not the right mattresses or there was a design flaw. It does not matter though. If the mattress falls out I probably will be in it. I am more worried about falling out without the mattress.
2013 Rockwood Roo 233S
1998 Dodge Ram 2500
Campcation Days This Year: Not nearly enough!!!!