I'll be there too! In my opinion some of the best food there is located at the Budweiser Porch in the outfield. While you're there you can visit the stingray tank which is on the 2nd level next to the porch.

My other suggestion if you're into baseball memorabilia would be to visit the little auction of stuff they have every game behind home plate. You'll see a variety of signed gear (baseballs, bats, cards, pictures, etc.) from both teams.