I'll second that it's a good idea to follow the Bang Shift Drag Week forum. The forum will be fairly slow during the summer, and pick up more the closer it gets to the start of Drag Week. But it's interesting to see what people are working on, and there is a thread going there right now on advice for things to bring along, for example. It's also a good place to check after Drag Week for pictures and stories. Like Alan said, I'm sure if you post the question there you will get some answers. I mostly just lurk there, but I have seen people comment in the past on camping, you won't be the only one.
I wish you nothing but smooth travels on Drag Week, but it's not unusual for competitors to only briefly get to sample their motel room bed. I've been following Mopar Billy & his family's exploits and those guys barely make it to the motel sometimes before the continental breakfast is being put out. So your idea of just camping isn't a bad one.