Can you take RV or is it Tent only if yes what is the biggest size RV?

You CAN take a RV in there, but be aware that the whole thing sits on a hillside and they made us drive through the campground and back to the kiosk to pick out a site and see then if it was available. (NOT THE NORM IN MOST CAMPGROUNDS) I would not do it in a larger RV

You can use tent or rv. I know what the largest size is.

Yes, both RV's & tents are allowed.

Check their website. It will tell ya.