Wow, dogs at concerts? What's next. Shit, I remember going to Grateful Dead concerts where nearly everyone was smoking. We used to try to guess how much weed was in the place. We figured 20k people with an average on 1/8 each. That works out to about 160 lbs! Nobody ever cared or tried to do anything about it. Once I got patted down and they felt a 1/4 of shrooms I had in my jacket pocket. The chick reached in, pulled out the bag and checked it out, then put it back in my pocket. She just smiled and said" as long as there's no bottles" . I nearly shit my pants that time.