Family Dinner for 14 Near Poughkeepsie
Shadows on the Hudson in Poughkeepsie is a restaurant built a few years ago has some semi-private rooms. They have pretty good food that can accommodate many different tastes, and has gorgeous views of the Hudson river and mid-hudson bridge.
Also I know Dolce Vita in Wappingers has a private room available. They have great Italian food and great service. I was there for a bridal shower once, and they did a great job.
Dolce Vita Restaurant
942 Route 376, Wappingers Falls, NY 12590