We always go on vacation for Thanksgiving so, I've eaten at plenty of restaurants. We don't always go to Disney so, my experience is more world wide. But one year we did and we ate at Captain's Grille. I thought it was okay to good. Not excellent but had all the turkey trimmings and then, some. I liked that they served miniature type desserts so, you didn't over stuff yourself.
One place I found really consistent with Thanksgiving is Costco. So, we normally get the traditional Costco turkey breast, mashed potatoes, stuffing, gravy, cranberry, scalloped potatoes, asparagus and a pie. Great meal. Normally, we cook it all on the first night of our trip and then, eat it all week for leftovers and sandwiches. You can generally buy everything for about $50.