If you win a jackpot, from their slots, large or small, run to your car and hightail it out of there. Such as it is, with Oklahoma's Indian Gaming, which is not governed by any State agency, as it should be.
A hit on 3 sevens, at one of these places will barely get you back your money bet. Best to go on to Kansas, which has better oversight, and games like Las Vegas.
I like Indians and their casinos, don't get me wrong... However, I don't like paying for the mistakes of my White ancestors.