This is a going-away party dinner so nothing to dingy, but looking for a dependably good Chinatown restaurant where we can either make reservations for 10 or not endure too long a wait on a Sunday night. The eaters are probably not too adventurous, so I'm thinking of sticking to Shanghainese or Cantonese. How is Sweet & Tart for this kind of thing? or Yeah Shanghai? I haven't been to either so opinions or other recommendations are much appreciated! Thanks!