Sounds like a good idea. As of yet my parents haven't expressed any interest in this site(I mentioned it once in a conversation with my mom about my flash movies, that's why I brought that up) so I don't think I have to worry about any mentions of my girlfriend being moved to private.
But in that respect I think an even better course of action would be to just block off non-members from even viewing the forums, along with not joining... unless you've done that already.
As for the RV section...
I will be there often.
Can other people act RVish there too?