Saturday is the main swap day with open car parking. Sunday is the judged show. Since the swappers have to pack up at the end of Saturday a lot of them call it a weekend & don't return figuring the crowds came through on Saturday.
It ok is the swapper want to stay over Saturday night. But there is no light over there or gates. I wouldn't leave my stuff out in the open without being/sleeping next to it. But I know people that put there stuff in the van/camper and get a ride out to the hotel or cruise in.