I am having dinner with 3 old friends from high school--haven't seen them in almost 20 years. They are all coming in to "The City" for the occasion from there suburban homes. I want to find a place that has great food, but casual and not too expensive, preferably downtown. I would love them to be wowed by a fun and delicious restaurant experience. Olive Garden is out. I was thinking about Frank in the East Village but they don't take reservations. Thanks!!