Holidays do not need to equal stress. T-Day is a great chance to eat well if you ask me...and maybe someone else has done the cooking for you.
Turkey - on plan! Stick to white meat and avoid the gravy.
Veggies - on plan! I brought a raw veggie tray last year and kinda munched on those throughout the day as people were eating pie etc. Cooked veggies and salads are ok too of course, just beware of cream dressings on either of them.
Bread - Have 1...and only 1 roll if thats your deal. Last year, I skipped the roll and had a sliver of pumpkin pie instead.
The danger of T-Day isn't what you eat, but overeating. Eat and then occupy your mouth otherwise. Carry a big cup of water around with you and chew gum. Hard to eat something if you're chewing gum. If thats not for you, then take your toothbrush and brush your teeth after you eat. Can't eat after you do that.
Most of all...don't stress it. SO not worth the effort of stressing over. Enjoy the time with people rather than focusing on the food.
Be thankful most of all that we are blessed with the problem of having too much food. There are lots of people in the world who won't eat at all next Thursday.