Anyone been turned away from campground for older rig?

I've heard of the restrictions before. Age seems to be a random, unreliable way to "keep out the trash". I've seen some fairly new rv's that look like garbage, and perhaps the coolest looking rig I've camped near was a fully restored 1950 something bus. It was beautiful!

As far as blacklisting goes....we camped at a place last year that stated in their rules that if you left the place trashed they would notify all the other campgrounds in the area and you would be "blacklisted". Actually, I was good with that.