Dwain,
Seeing the pictures of all the campers in the infield reminded me of my neighbors trips to Darlington. Years ago, they would load up their camper and another friends camper. They also took two pick up trucks that they used to haul their meats and beer. They literally went to the dump and got two old refrigerators and removed the coils from the back. They then laid a refrigerator on its back in each pick up truck. They filled one with ice and cold beverages, and the other with dry ice and all the meat and food they needed for the weekend.
They said that when the races were over, they just shoved the old refrigerators off the back of the truck and left them there! Ha! I lived next to them for 3 years and they did this every year.
So if any of you ever want a large cooler for free, visit your local dump.
Ray