We went to a sold out concert Sept 20th, 2013, Luke Bryan, Florida Georgia Line and Thompson Square. The show itself was great, great music, sound, lights. The venue was pretty crummy. This amphitheater reportedly seats 20,000 and has a large general admission area. There is one two lane road into the area. One. It took us 1 hour to go 1/2 a mile. Seriously. No traffic control, no police, no one trying to intelligently manage all of that traffic. We finally got fed up, parked and walked. Because I didn't know better we parked far away and ended up walking 1 1/2 miles both ways.
Once we got there the place was bedlam, some crazy in a good way, many people dancing and singing and having a good time. Some not. Most of the t-shirts were already sold out, and there were long lines for beer. Lots and lots of beer and all the bad behavior that can come with that. Not enough bathrooms or porta pottys. Like every concert there were people from general admission shoving into the seated area and the security we saw were too busy watching the show to bother. Lots of frustration.
After the show it was the craziness in reverse, the mass exodus up that single road. There was one police unit at a corner on the road. One. Nothing moved very quickly but we were walking so we actually did better leaving. I wouldn't advise it though, this is in the middle of nowhere. No businesses, no restaurants, no street lighting or sidewalks, nothing except a Lays Chip factory.
At one point while standing in line we talked with a local. She said they arrived at 430 pm for the 7 pm show. They also brought their BBQ so they could grill in the parking lot after the show and wait out everyone. If you go to a show here, at least a really popular show, take that advice and bring a lot of patience.