I doubt it, this is a summer community. Suggest you call restaurant to see if they are open
We went there twice a couple weeks ago (first time around 1:00 PM and the second around 5:30 PM) and the diner was not very busy at all, despite having incredible food. The place is most known for it's breakfast food and is most busy during morning hours. It doesn't strike me as a place people would typically have Thanksgiving dinner, so most likely no. I can't guarantee that it won't be busy, but I can guarantee the food will be stellar either way.
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