Have a GREAT TIME. If you have a digital camera or can get your hands on one, do it. I love going over pictures of games past. It truely is an experience to remember.
Edit:
Oh, and one more thing. Don't get all emotional and shed tears at the end of the national anthem when 79,000 crazy fans scream as loud as they can; in unison "HOME OF THE CHIEEEEEEEEEEFS"!... Ok, Ok... You can shed one tear, and one tear only.