Review for Primm Valley Resort and Casino Review For Hard Rock Hotel and Casino Sioux City Google User Nov 21 '17 at 4:02 Ultimate tasting buffet at the world tour, worth every dollar I lost playing on those casino machines. Lot of variety in meats and different cuisines. Good and helpful staff. Monday’s are free breakfast buffet. Friday’s and Saturday’s are guaranteed win at the casino it seems, try your luck! View full site to comment or like