Sorry to stray from the AD derail but in 2008, I was camped right next to some guys from I think Wisconsin. They had set up a giant parachute canopy creating a big, open tent. They had in the back of their truck a generator along with a decent sized (not too big though) sound system. They didnt actually have a DJ setup if I recall, but everything is a little hazy.
I had a blast camping next to them though, but I didnt really sleep any of the nights anyways.