I would cancel your reservation in Whitefish and plan on spending that sat night in Missoula. Whitefish is a 2+ hr drive from Missoula and I promise you that you won't feel like making that drive after experiencing a Griz Game Day. As for lodging and parking, there are several motels near the stadium on East Broadway and you just park there and make the easy 5-10 minute walk across the footbridge into the tailgates and stadium. There are hundreds of great tailgate partys. Grzfnz's is a place to get exceptional grub and alot of eGrizzers hang out there also. Check this board in august as the game approaches but I certainly would recommend spending at least sat night in Missoula, and fri night as well as the nightlife on a fri night before a game is incredible in the previously mentioned places like Reds and Mo Club. While in Mo Club be sure to get a hot pepper cheeseburger. Before the game on sat morn the Press Box is very close to the stadium and have some wicked bloody Marys to help you recover from the previous night and they also have a great breakfast buffet. Don't leave Montana without experiencing Griz Gameday it truly is a wonderful experience and after 12 years of missing only 2 games it just never gets old.