Be aware of the big names though. Folks like Plant, Fogerty, etc always bring in their own sound guys. Some of them defer to the PB crew and let them dial it in, but some of them drive the board themselves. Usually, that's when you get ear-bleed levels or awful distortion (think John Fogerty and Ryan Adams as classic examples).
The Fogerty set was the only time I've had every person I offered earplugs to accept them...it was too loud EVERYWHERE
They actually handed out ear plugs in the poser pit for Fogerty. I hung back at camp with Skubes for that set and, like she said, it was even too loud there. But still a great set. I"d love to see him again, but I'll definitely bring some ear plugs.