I have gone to the Sourland Music fest several time and have always enjoyed it. Purpose ,other than have a good time, music, food, camaraderie, is to support the environmental protection of the area (which includes Lambertville). You can bring food or buy from vendors there. They have a silent auction. Plenty of room to spread out AND play bocce. Suggest that people in other Meetups join our group.
There is plenty of parking. The organizers of the Music Fest charge an entrance fee.