Every trip I took in my popup camper would result in a loose screw or bolt laying on the floor when we arrived at the campsite. Until we got some thread locker that is!
If you’ve ever watched your popup camper drive by a bumpy road, not from the tow vehicle, but alongside your camper as it passes by – you’ll notice the ride is fairly bumpy. This rattles loose all the little screws and bolts inside. When that happens, I simply apply some thread locker before screwing them back in. So far, nothing with thread locker applied has ever rattled loose again.