I was just trying to find something regarding Mesa Amphitheater, which is one of the better concert venues in Arizona. Its actually run by the city of Mesa, and boy do they know how to get people excited! Here are some quotes from their website.
"Please be courteous to your fellow concertgoers. Rushing the stage is not a good idea under any circumstances, but in the desert heat, it can be even more serious. Make sure you have open space around you."
"Do not throw objects on stage during the band's performance. Flying water bottles and tennis shoes are not conducive to a great night's set."
"We would hate for you to miss the show due to heat exhaustion."
"the relaxed outdoor atmosphere is an ideal setting to bring people together."
And my favorite, under "Event Planning"
"The sound pressure level of 100 DBA at the house mix shall not be exceeded more than seven (7) times at five (5) second intervals each during a fifteen (15) minute period...The City does levy a $2,500 fee per violation, and the event may be terminated at any time if this regulation is not adhered to."