I hate the throwing of objects too.  I was at a concert in a pavillion with a lawn section behind that.  The lawn people started hucking chunks of dirt and grass at us pavillion people and I got pelted square in the back.

I hate the walk arounders.  The ones who like to mingle while the band is playing.  They block my view constantly come in and out of the row and are just annoying.  This always happens when there are multiple bands playing.  They will mingle and walk about while the band is going but between bands NOTHING but they want to get annoyed with me because I choose that time to go to the bathroom or to get a drink.