As soon as people pay to use a service they feel like they therefore own the property and just trash the place. I know the operator of Baptist camp personally (best friend of his cousin) and he wouldn't let us park there for liability reasons. Its not his business to deal with trashy people who litter/drink too much/fight/poach wildlife/fall through the ice/tear up his lawn/etc. Long story short, people in groups are slobs and @$$holes so he stays out of that business.
He has helped me out in times of extremely bad weather, but again, I had an in to get to know him personally.