Reply #4: The rules at many parks...

[Xithras]

...are that RV's older than 10 years must be well maintained and in good, safe running order and compliant with modern fire and waste regulations. My wife and I do an RV thing with the kids every summer, and there are older RV's at every site I've visited. The difference is that they're well maintained, and look much like they did when they were new. I've never heard of a park turning a camper away simply because it was old (that would be a VERY bad business decision, as there are a sizeable number of RV'ers who pull restored Airstreams and other classic trailers).

The rule is usually that anything newer than 10 is automatically approved. Anything older has to be inspected first.