Personal update: I went last night for Foo Fighters and it was horrendous. Worst Bluesfest experience to date and I've been attending consistently for what feels like ages.
The line to get in was big but efficient. Food took 40+ minutes. Bathroom line took 20 mins.
I hated how/where the stage was set up and the sound was awful where I could finally nab a spot.
The worst part was the crowd-- everyone seemed oblivious to why they were there (to see a band) and just had exceedingly loud conversations. I couldn't even hear Dave speak because the crowd talking around me totally drowned him out. Part could be the bad sound also. I mean I don't expect you to be quiet but why are you in the middle of a crowd yelling "so, where are you from ? Where'd you go to school?" Go to a bar?!