Come in and join our Duck Creek Casino Player's Club – it's FREE, quick and easy! Plus, just for joining, you could receive up to $ FREE PLAY! Just stop by. Each guest will enjoy $5 FREE PLAY on us. About River Bend Casino River Bend Casino in Oklahoma has all of your favorite Vegas-style games with exciting. A couple days ago, I walked into a casino in Oklahoma and walked out at a small casino in Arizona, where I was given 20 dollars in free play.