They haven't bothered me to be honest, then again, I'm usually paying attention to the show, not the people around me. Although, I did expirence some annoyance (indirectly) due to cell phones I guess, but it was the people I was with continually complainig about it & taking time to bother me with "look, another idiot on a phone during the show" instead of just having fun. As for people using them at festivals/parking lots, meh - I really don't care enough to concern myself with what other people are doing, I'm there for the music & party not to meet or watch people.