Pre-game, go to Kegler's Sports Bar and mingle with the crowd a couple of hours before the game then walk to the stadium. On your walk, mingle with the tailgaters in the Blue Lot especially. You'll get offered drinks, I'm sure and you can chat up some of the lovelys. Get in your seats early for the pre-game from the Pride of WV, The Mountaineer Marching Band. It really is a great pre-game show and one of the traditions inside the stadium you should not miss.
In the Morgantown area, day before the game if you're in you should make your way to Cooper's Rocks State Park. The view from the overlook is spectacular any time of the year but especially in the fall. Mario's Fishbowl is a must do stop as is the brew-pubs in town. Mountain State Brewing, Morgantown Brewing and Chestnut Brew Works if you'd like to try some great local beers.
I like the food at Tin 202 downtown for a nice meal, or grab a slice at Pizza Al's if you what something quick and tasty. Oliverio's for good Italian, Bourbon Prime or Bartini for steaks. Los Mariachis best Mexican.
Hope that helps, welcome to Morgantown!