If I were on West Maui for Thanksgiving I'd head here assuming they are are open. Matter of fact, I'd head to one of Bev Gannon's two Maui restaurants no matter where I was on Maui.
HALIIMAILE GENERAL STORE 572-2666 Haliimaile
Creative preparations of delicious seafoods and meats. In upcountry area, a one-hour drive from Kaanapali or 45 minutes from Wailea, but worth the trip. Open for both lunch and dinner on weekdays, but weekends are dinner only. More details including menu and photos at this link:
Haliimaile General Store
Bev Gannon also has a restaurant in the south Kihei area called A Pacific View Restaurant which is in an open air setting with commanding, panoramic ocean views spanning offshore islands of Kaho`oholawe and Molokini, and Haleakala mountain views. Serving Modern Regional Cuisine.
Bev Gannon has secured herself as one of the consistently rated Top Chefs in Maui and her cookbook is a top seller among Hawaiian Regional Cuisine.
Moderately expensive and a bargain for what you get: worth it.

Unlike most gourmet restaurants big guys won't go away hungry. Generous portions of amazingly good food.
Sterling