I've read good reviews for both Boma and Cape May for Thanksgiving meals. Also, if you want the "fort" atmosphere, you could try Trail's End (it's probably the same food as HDDR) since it's in the same building. I'm not sure about the exact menus at these places, but I THINK I have read that they all keep some of their regular items and then add some traditional TG foods. I have an ADR for Boma on TG, but am seriously considering going off-site to the Gaylord Palms Resort to eat at their Thanksgiving Brunch at Villa de Flora. We are planning to visit the ICE exhibit there that day anyway. I would go ahead and get an ADR for somewhere ASAP, so at least you know you have something...