Something that has always intrigued me is how the beer gets to the taps. They have massive coolers (probably in the corners of the lower levels) that have taps and plastic tubing. That tubing is routed unrefrigerated for long distances (100s of feet) to that tap. They have to cool it some how, maybe pass it through a coil (not sure). I always wonder if they purge the systems after each game so beer doesn't sit there for 1 - 3 weeks before the next game.