I see what you're saying here, but at the same we've all known about this "enhanced enforcement" for two or three weeks now. I'm going to the MSU and OSU games this year, and to avoid getting an open container ticket, I'm simply not going to take any beer with me on my way to the stadium. If the police aren't aware of what is and is not University property, they can't expect the public to be either.
All that being said, based on what has been said by a few people, it seems like in certain areas the individual officers or units took a no tolerance approach, and I'm guessing that as the season wears on that it becomes a little more lax. It's going to get worse this weekend, but hopefully the week of the Arizona game gives the police some time to review the way they're doing things.