I don't think it is expressly prohibited, but do you plan on running a generator the whole time, including when you are inside Centeroo? I haven't seen one of those in the campgrounds yet, but I'm not sure it's practical, unfortunately.
Ah yes... Depending on the weather, Bonnaroo can be EXTREMELY dusty, especially in certain camping areas. If we get a Dustaroo this year, and the fan survives, the dancing guy (gal?) would be full of dust in no time. Good point about the dust.