1. Pre-party at Alfred's. $2.00 longnecks before the games, and then you can walk out of the fire exit in the back and you're right at the stadium entrance
2. For a decent beer, go to Jack Daniel's bar just past the front lobby. Same price as all other vendors but they have Sam Adams and a few other good beers.
3. As others said, get the BBQ nachos. About the only thing you can buy there that is worth every penny.
4. It may only be on the weekends, but beer and some cocktails are somewhere around $3 after 9:00 at Jack Daniel's bar.
Other than that, I think you'll have a good time. It's definitely more about food, drinks, and entertainment than good basketball.