My husband works for an RV dealer that also rents. They don't rent the big ones and they also rent pop up trailers. They won't let the kids drive. It was, not sure what it is now, $100/day plus mileage and like Navy Wife said, not good 6-8 mpg. Personally ~ too many people holed up in too small a place for too long a time is not good. Check flights. I know its inconvenient too but probably cheaper in the long run and safer. You just can't pack to the gills.