One nationals that just my son and I went to, I rented a U-haul truck. I think it had a low day rate, like $10/day plus miles. The place we rented from was only a few miles from the site. There was no camping on site, but I told them I was a vendor and we were able to park at the vendor area close to the lakes. We just slept in the back of the U-haul for 4 days and saved a bunch of money on hotel rooms.