Even though guests might occupy spaces for weeks, months, or even years, the agreement between the park and the guest never changes. The guest is free to leave at any time, and the park is able to evict on a similar, short-notice basis. The fact to keep in mind is that RV parks are not the same as mobile home parks, which are more like apartment or condominium communities. Spaces are rented, leased, or purchased for long-term occupancy. The reason is simple.
Mobile homes are generally mobile only once in their lives.
Once in place, they budge no more, giving them the privilege of a permanent mailing address and personal utility bills. But if you look closely at an establishment that calls itself an RV park, you'll notice that every occupying vehicle, whether trailer or motor home, has usable tires. Even if they rarely do, trailers and motor homes have to look like they can roll within half an hour. RV parks can't let residents lose their mobility, or their status would change. They'd metamorphose into landlords of the apartment kind, something they're loathe to allow.