I've read with much interest all the posts on this topic I started. Keep in mind I have owned 4 truck campers. Two were crank down soft side Skampers and two were hard side models with A/C. When we traveled with truck campers we never called ahead for reservations because all the private owned RV parks would let us park somewhere. Once in Cody Wyoming they were having a big Saturday night rodeo and the local campground was full. When the attendant found out that we were in a truck camper he told me to pull alongside the camp office and plug in with the soft drink dispenser at the side of the building. We were never turned away.
Another thing that is upsetting about truck campers is depreciation!! Dealers simply do not want them on their inventory. Most require a very heavy duty pickup and really should be on a dually. Not many people have a truck that can handle this weight. The first two truck campers I had were the light weight crank down roof models that weighed less than 1200 lbs and I sold those very quickly to guys with half ton pickups. Big market for these light models. The two hard side models I ended up trading in and practically gave them to the dealer!!