Actually there is a nearby casino. If you consider Chamberlain the middle of nowhere you might as well consider all of South Dakota to be such a place. All he would have to do is visit the Load Star Casino. I think you would be surprised how many casinos there are in South Dakota on the various reservations in the middle of nowhere.
I lived in Minnesota for yrs so to me SD is., didn't know about the casino's just how poor the reservations are.