Dealing with Christmas parties can be especially trying for a Celiac. The best strategy for dealing with these parties is to bring a fabulous dish or desert with you so everyone will be drooling over your food. Also be the first to dish up your portion so there's no cross contamination!
My daughter attended a Christmas party with a group she belongs to and brought a tray of her Delicious chocolate chip cookies. (I steal these cookies every time she makes them-they are soooo good!) When she was questioning one party goer about the chicken and rice dish they made-any flour, breadcrumbs, etc in there?-another person stepped up to her and asked if she was Celiac. This woman had been diagnosed about a year before. My dd pointed to the cookies-those are GF too! The woman was so excited to have something from the desert table she could eat she practically danced.
Moral of the story? Where ever you go...there we are!
Oh yeah, and be prepared. . .
Celiacs of the World Unite!