Sorry for the long title, but it pretty much sums up my dilemma. We're flying into SF on a Friday night, arriving at our hotel on Union Square around 8pm, if the flight is on time. Because of that "if", I am looking for a place near Union Square that is fairly casual and doesn't necessitate reservations. Any cuisine is fine. Am I dreaming? Is this possible without ending up at Cheesecake Factory? Should we head straight to Chinatown?