Review for River Rock Casino Review For River Rock Casino Google User Jun 30 '16 at 8:25 I went to the buffet with family for dinner. It was a group of 13 of us so they charged us gratuity at the door. Not sure how I felt about this when they didn't even serve us drinks at the beginning. They have a pretty nice sushi bar which has a large sashimi station consisting of snapper, tuna, and salmon. The soft drink machine is pretty neat being touch screen. Great selection of food. Pretty good deal at $34 per adult (with the encode card). View full site to comment or like