Well, if you are trying to fit into 'tent' sites, then yes, even my little 22' TT won't fit in most of those spaces...
But, if you are talking an RV park, or even state park "RV" sites, then you should not find any problems. If they do ask what size rig you have, then there could be issue with fitment but that's the reason they ask first.
The old national parks were not made for modern day RV's, so they may have more restrictive sites depending..
So, in the end.. There is no real answer to your question other than getting the RV you want and then deal with where you want to go.. Or if where you want to go is more important.. Find that out and adjust your RV to those specs.
Good luck!
Mitch
