If you sit in the lower bowl (100 sections), be prepared to stand for most, if not all of the game.
If you go to a 1:00 game and have seats on the home team side, bring sunblock & sunglasses. Drink lots of $7 water.
The views from the endzone sections are worse the lower you get. Endzone seats in the 300 sections have a better view of the opposite endzone compared to the 100 sections. If you're in the endzone 100/200 sections, when they're at the opposite endzone, you end up watching the big screens a lot. It's hard to tell if they score or not if you don't watch the big screen.
The private lots typically get you out and on the road faster, but they're also $40-60 & some of them are a good 25-40 minute walk, so sometimes, you get stuck in traffic anyway.
If it rains, bring a poncho. If you have to bring ponchos, put them in one of those clear bags they sell in the Pro Shop - it's easier than carrying them in your hand and it's harder to accidentally forget them when you leave. Ponchos save you from a very uncomfortable day and the drive home is a lot better if you're not squelching in your seats.
If you like a certain type of beer, be aware that most of the vendors offer different beers. If you don't see one you like, go to the next booth and see if they have what you're looking for.
At the end of the game, especially if you're in the 300 sections, use the central stairway instead of the long-ass ramps. You'll get out much quicker. Those ramps suck from the 300 sections. They really should call them the cardiac stress test exit ramps.