Need a recommendation for a restaurant that is large enough for a party of 18 (14 adults/teenagers, 3 kids, 1 infant - all who can behave, except maybe for the adults) for Mom's 75 B-Day. The restaurant should be in Marin or Petaluma. A private room would be a plus, but not necessary. We are considering El Paseo, but may want something less formal. No chain restaurants, pizza, Mexican or Asian. Thanks.