This is what a music venue should be. They do a great job of separating under-21s and 21+s. I'm not a huge drinker and would rather be closer to the artists, so I just went in the under-21 section in the front. The place is surprisingly well-ventilated (I never felt hot in the warm summer heat of AZ) and they provide self-service water and cups! My brother was even able to catch a basketball game near the bar while we were waiting for the opener to come on.
I wish I lived closer, but I'll look for shows here whenever I'm back at home visiting.