You would think that, but it's not true. We have visited some really "common" RV parks that had a 10 year rule. We have also been to some really, really nice RV parks that did not. Some parks simply think too much of themselves and when they do I choose to move on unless it happens to be the only RV park in the area where I NEED to spend a week or so. For a stay of a day or 2 I would rather run my genny at the local WalMart than gives these folks a dime.