There is a huge lack of air flow under there. If you are sitting under the covered seating, be prepared to sweat the entire time if its even remotely warm out. Thats way more then even going to a ball game at Busch! And now onto the lack of air flow. First, a tall beer is gonna cost you $13.
The two other complaints that I want to bring up are drink prices and there is no air conditioning at all in this place. The amphitheater offers free parking which is great but free comes with a price when you leave.be prepared to sit in traffic when exiting the lot ( 30 min at least).