I always enjoy a short walk downtown before or after the game. Before, there is a lot of activity with cheerleaders and former players. A great time to get some gear and have an awesome meal/pizza. Its just a good game-day vibe. Post game, ~ 7:00, it gets a bit more party like if we win, angry if we lose. As someone said, the creamery but be prepared for a long wait. There is also some good food (food trucks) now between the stadium and arena. Finally, a visit to the minor league ballpark and the PSU hall of fame is fun. But given your schedule, I'd park and try to get into a tailgate. Or, park and take a long walk to the town, then back, before the game starts. Don't forget, can't take much into the stadium anymore (not even an umbrella or purse).