Gila River Resorts & Casinos opens its new Santan Mountain Casino today with a two-day, grand-opening celebration (June 30 - July 1). Read more Santan Mountain Casino Opens Today! J. The BetMGM Sportsbook is a 7,000 square-foot betting lounge with a 130-foot LED screen.
The largest casino sportsbook in Arizona is located inside the new Santan Mountain Casino. Read more Santan Mountain Casino Boasts Largest Sportsbook in AZ J. Santan Mountain Casino, which boasts the largest sportsbook venue in Arizona, has now added the largest sportsbook LED video wall in the state. News Headlines Santan Mountain Casino boasts AZ's largest sportsbook Decem.