Review for Rivers Casino Des Plaines - Chicago Review For Rivers Casino Des Plaines - Chicago Google User Aug 10 '17 at 14:51 Cheapskate tip: We go at 3:50pm, paid for the lunch price of $19.95 and at 4pm dinner food starts (dinner price $39.95) we get the dinner meals and save $20 per person! Monday is Prime Rib night, so we get to have all you can eat prime rib for $19.95. Love the Sushi, BBQ brisket, mango & coconut gelato and the many, many different kinds of desserts. View full site to comment or like