I've seen some come into RV Parks/Campgrounds and the biggest issues is finding a spot to park the trailer. For example the park we are currently staying in has very few guest parking spots and restrict parking in those spots to motorized vehicles. The sites are big enough for a MH and Toad, but not big enough to also park an enclosed trailer. The RVers with the enclosed trailers end up parking the trailer outside of the park on a street. So they run the risk of the trailer being stolen. Some parks have an RV storage area or overflow section but will charge you a fee to park the trailer.
It's rare to see a park with sites big enough to handle the MH, enclosed trailer and toad all on one site.
By the way the vehicles being carried in the trailers have been equipped with a hitch so it can be used to move the enclosed trailer around once the vehicle has been unloaded.