My stay in America spanned three Thanksgivings and three Christmases. I got invited to dinner somewhere on all 6 occasions - such is the hospitality of America. On the first Thanksgiving, my (black) house sharing friend invited me to join him and his family in Kentucky. I was the only white guy at the table... and yet no-one blinked an eye about it.
As one experienced in dealing with differing religious beliefs within the same family, I would say enjoy TG the way you want - and let others do the same.