I think most will be there from Wed/Thurs to the end, those working will likely be there for the duration.
Easiest way to hook up is to catch BOOT over that the WWII reenactors section. He's a fairly big guy named Greg, he'll likely be in WWII uniform, and wearing a Clark Gable style mustache for the whole event. He'll know where everyone else is and what they're doing. most of them have left already and I can't reach them. They're all pretty friendly.