Is there an RV Park available?

Yes. And the shuttle goes there too

Yes. The KOA. Great park.

Yes

There is a KOA nearby. Within walking distance

Not on the casino grounds, but some distance away.

Yes, however if you're looking for just one night stay, there's a truck/travel center across the street where you can park. No RV service's there though, just a place to park if you're looking to visit for a few hours or one night

There is a Choctaw Nation RV park in area of the casino but I don't know any info about the rates or any of the information about it