Engagement party Whippany or Morristown? - moved from Mid-Atlantic board
Do a search -- there have been threads inquiring about parties in the Morristown area. I think only Copelands (the restaurant at the Westin) was mentioned as having a private room.
I would imagine that Rod's at the Madison Hotel (Convent Station/Madison) also has a number of private rooms if you prefer a steakhouse setting.