OSV is on my list of places to visit. Along with Mystic Seaport, Fort Ticonderoga, and a few others. The living history group I'm involved with does their annual "Feast Of The Harvest Moon" at a 150 year old mansion turned bed and breakfast that boasts a beautiful banquet hall with hand hewn beams, and a giant stone hearth. Of course period clothing is required, and the evening includes dances like the Virginia Reel and games of Farkle and Shut-the-box.
It looks like you guys have a good time. I hope to come see it someday.