The Oracle Arena has concession stands for everyone's taste. They have the Port of Pizzan which is all homemade and makes really good stuffed pizzans. Above the Rim has a lot of good Asian food. Nothing But Net has a more seafood menu and good Po’ Boy sandwiches. Also try the Market Fresh Carvery, Alameda Smokehouse, and the Gold Rush Grill. If you want a restaurant, check out the Courtside Club.

They don't really have an "opposing" team area...everyone is pretty much mixed together, obviously many more Warriors fans than not.

Obviously, the higher up you get, the cheaper the tickets. If you want reasonable prices, sit in the upper level. I have sat up there (specifically Section 220-218) and the seats are great.

Park at the coliseum bart station on the east side of the arena. It's free parking, and a short walk over the catwalk from bart. Might want to get there a bit early though, it does fill up fast.

The Englander bar and grill is great and about 10 min. from the arena. It's located in San Leandro just off 880 at marina. Take Marina down to E 14th (East), make a right (heading south) its 2 blocks south on your right. Great food, 30 something beers on tap, great atmosphere.