In most cases, everything on the menu is available on the dining plan. There are few exceptions - two of the sushi plates at California Grill count as entrees rather than appetizers, and I seem to recall reading that Wolfgang Puck Cafe excludes some items from the plan. And there is no completely uniform policy about non-alcoholic specialty drinks like smoothies and shakes; some restaurants include them, some don't, and at some it seems to depend upon the server.