If you are headed to a Thanksgiving meal away from home, there are some things you can do to stay ( sort of ) on a clean path.
1. Tell your host about your CE needs. Ask that a portion of mashed potatoes not be loaded with cream and butter just for you. If sweet potato is on the menu, ask if a few can be pulled aside for you before mashed and marshmallowed.
2. Bring something! Offer to bring a CE alternative that you'll be able to enjoy. While not necessarily CE, try looking at some of these recipes at eatbetteramerica.com: Healthified Thanksgiving Recipes
3. Focus on the foods that are simplest - turkey, potato, vegetables. Stay away from stuffing, gravy, cranberry sauce.