Not sure where you are in the northeast, but if you haven't been to Sturbridge, Massachusetts, you might want to check out Old Sturbridge Village, and have your turkey dinner at the Publick House in their Historic Tap Room, which is nearby. I've been to both Sturbridge Village and the Inn many times. The Inn serves turkey dinner every day, and it's real turkey, not processed crap. You can even stay there if you want.
I've been wanting to get to Plimoth Plantation for a few years now, but haven't yet made the trip. They're open through Novemer 30th, and both Sturbridge Village and Plimoth Plantation host Thanksgiving dinners, along with the fare at the Publick House. Here's the link to the Village:
Old Sturbridge Village
Here's the link to the Inn:
Publick House
Here's the link to Plimoth Plantation:
Plimoth Plantation