Gargoyle, I was not talking about the impact of amplified sound -- it's true that a properly designed system can limit the sound level and direction to the audience area.

But the other impacts of hundreds or thousands of vehicles, demands for sanitation and other local resources are inevitable. When an audience member trips over a tent rope and breaks his leg, or has a grand mal epileptic seizure, will the local hospital be able to handle it?

As for cops looking for a bust, if you get that kind of vibe from the local authorities during your initial disussions with them, that's a good indication that you need to look for a different site.