There was a group of people sitting in front of us that were crushing quite a few beers during the game. The beer vendor kept coming back to them over and over. But in my observation, these people were not spilling beer or being too obnoxious or anything. They were just enjoying a nice Saturday afternoon at the ballpark, and if they want to spend $13 per beer or whatever it was, good for them.
My group wasn’t drinking alcohol, but we did have soda, hot dogs, and ice cream. I was happy with the efficiency of the concession stands, and overall it was a good experience at Busch Stadium.