For those who are making the pilgramage over to the Zone the day of the game, I'd recommend taking the Main Street exit off I-90. The 19th st exit will probably be backed up all the way from campus to the interstate. Additionally, I'd recommend parking in the parking garage (no fees are collected on weekends) down by the Student Union Building, as it will likely be a little safer for your vehicles than parking in main dorm parking lot...Most of the people who park in this lot are older, have families, and are generally sober. The SUB is also a good place to hit a clean/warm bathroom and a coffee/espresso/hot chocolate before heading up to the tailgates.
Directions:
After exiting take a right on Main Street, a left on highland blvd, and a right on Kagy, right on Willson, left on Grant. This will take you to the "pay" parking lot (7th and Grant). It's a little bit of a walk to the tailgate area (probably 1/4 of a mile) but not that big of a deal. I think the Grizzly Alumni tailgate is generally located on the practice field at 7th and Kagy. The MSU tailgate lot is going to be ridiculous...enter at your own risk.
Getting out of the lot is always slow....not sure if UM radio broadcasts the game in Bozeman, but the MSU station is 100.7 fm if you want to listen to postgame stats/interviews while leaving the lot.
I think this will help to avoid most of the drunk students and hopefully any confrontations.
Griz fans, let me know if you have any other questions......Cat fans, am I missing anything?