Are there any restaurants?

Eat before outside the arena inside very expensive

There are restaurants around the arena. There are ticketed sections with all you can eat options. Then there are a variety of quality concession stands in the arena from local restaurants.

Just snack bars type. It's cheaper to eat before you go

It is better just to grab a bite to eat at one of the many places around the arena.

Good food but Arena prices. $9.50 for 2 bottles of Aquafina eater

Yes several places in there for food