"Pushing 70" now , we camped out a lot in our youth , traveling around painting pictures of this beautiful country we live in. ( my job) And if it wasn’t sleeping in the back of a van or pickup truck , it was out in the open in an old Boy Scout Pup Tent ( and ancient sleeping bag ) I used for years . But since Katrina hit our area , and subsequent unexpected 5+ week EVAC , (living like “poor people “ ) and led to this site and TTT’s ... We’ve been so excited about “tiny trailer camping” !!! ( "hard tent")
Nice dry “room" to rollout the old sleeping bag and place to keep your “stuff” ... But on these latest trailer builds , we have settled on lots of thick outdoor cushions ,that we got cheap on a “clearance” sale, to sleep on (lots of small pillows too ) cushions which can be stacked in many different ways to make comfortable beds sofas and chairs ( even outdoors on a tarp "rug”) ... and when not needed just stacked conveniently out of the way ... and washable ...
JMHO , that may be a lot better than having a dedicated “Bed” taking up that huge amount of floorspace space 24/7 ...
All what you get used to really !!! Do what you like, and what makes you most comfortable !!!
RE: Adhesive ... some of those “Foam specific adhesives are specifically packaged mostly for the model "Hobby “ industry and can be
extremely pricy ...usually the same material can be found a LOT cheaper with a little extra searching elsewhere... That and you have to be careful , because some spray adhesives out-gas much later when heated ( sunlight) and that may not matter in a model ( although we've had slightly melted foam surfaces as a result )... but we wouldn’t want to breathe those gasses ...a stinky camper can ruin an otherwise good trip ...
My 2cents ...