My rules. Follow them closely.
1. Get there early. Traffic is a bitch. Parking is a bitch. 3 hours ahead of game time.
2. If you drink, then drink. But don't get so drunk as to not be able to enjoy the game. Lots of people, including me, get in trouble drinking from 9 am to 4 pm.
3. If you can, come in from the west and park south/southeast of the stadium, just off Dubiner Circle. The little triangle where Dubiner starts to turn back north. You will be on grass and the wooded area is a much better bathroom than the porta potty thing. You have to get there early. You'll come in on Lancer.
4. Lawn chairs
5. If you are traveling and don't want to mess with cooking, you can get some party platters and sides from the local BBQ places.