Vegetarian in Santa Fe/Thanksgiving
Annapurna (Ayurvedic Cuisine) Is probably your best bet, They now hves a branch in SF. We attended an impressive pre fixe feast at their place in ABQ on Thanksgiving several years ago. They fill up quickly for holidays so I would call early and reserve. The Albuquerque locations' phone is (505) 262-2424.
You might also try India Palace in SF at www.india palace.com
All of the "high end" restaurants ( Anasazi, Compound, Geronimo, SantaCafe, Ristra, Amavi, Fuego - sure I've forgotten sombody) are open for Thanksgiving and all, throughout the year, offer really interesting vegetarian options. The holiday will be no exception.
As you get closer to making a reservation, call or check their websites; many of which will show the special Holiday menu. Requires some effort but should yield a pleasant meal.