When it is hot outside, the beer guys get absolutely mobbed down below so they never make it to the upper levels of the nosebleeds. Consequently, thirsty patrons make their way down and intercept the beer guys, which in turn clogs the aisles, and makes for a general mess (I had the pleasure of being bathed by the nectar of the gods, Coors Light, when a vendor popped the top on one that had been partially shaken). Related, when an intoxicated guy behind us was asked what beer he wanted (choices were MGD, Miller Lite and Coors Light) he shouted "SURPRISE ME", which seriously cracked me up and made my day. It goes without saying, but the opening of the can and pouring it into a cup is the worst method of cornwater delivery ever devised, but I am guessing that they don't trust Soldier Field fans with those plastic bottles full of beer as they might get tossed. This is why we can't have nice things.