Review for Dakota Sioux Casino Review For Mustangs Steakhouse & Buffet Google User Feb 2 '19 at 17:25 I give the Sioux 4 stars. They are the best casino out of all three that the SWO tribe owns. most of the staff are very friendly, and if gaming you have the best chance here at the Sioux. Very clean. Best promos. Bigger better fun!!!!! There is always room for improvement though. View full site to comment or like