Review for Diamond Jo Casino Dubuque Review For Tree Bar Google User Mar 9 '18 at 3:54 Smokey. The kitchen Buffet has great food but now requires you to play and have a rewards card to get the special price. There is a senior discount which makes the price very good. There is a wide variety of food to select from with the hot being hot and the cold cold. The desserts are a nice selection. The remodel and addition of a subway was an improvement. The new restaurant which is open is impressive and the menu looks good. I would confirm hours as the buffet is closed some evenings. View full site to comment or like