Nice to see that they reversed their no overnight policy. I laughed when I read the sign, a paragraph about points etc. Bottom line, you play, you can stay. They had to have quite a few meetings to come up with that policy. If you don't have a permit in your window by 10pm they might just kick you out. Bring lots of levelers unless you're lucky and get a flat site. It's all paved.
There is also a full service RV park run by the tribe across the road from the casino. It's OK. The shuttle runs through there. If it's really cold you may want to exercise this option. If I remember right it was around 35 bucks.