This same debate takes place over and over on Cyclone Fanatic. We let fans out at halftime, as well, and most fans don't show up until mid-3rd quarter if not at all. I have honestly never even considered leaving at halftime to come back, so I really don't understand why people do it. If drinking at games is your thing, drink enough before you enter the stadium, or, be creative! A ISU fan painted himself gold to resemble the Heisman trophy once so he could get a gold football shaped alcohol container into the stadium (the football is a prop on the Heisman Statue). It's stuff like this that make the gameday experience more fun, and to get your buzz on... lol.