With Thanksgiving the start of the "Holidays", here is what I am doing. For the celebration meals I get to eat every item that I really love. However, each portion is smaller than I used to take. I take longer to eat, savoring each mouthful, and there are no seconds (unless it is vegetables). But everything gets logged in the food tracker. And exercise is an absolute must.
This way I am participating fully and not feeling deprived. Enjoy today!