Mmmm, a lot of Lutherans here.
We had upheaval in my family so I spent the first sememster of third grade in Scandinavia, Wisconsin, living with my mother's oldest sister and her family. I don't remember if it was the school or the Lutheran church (the only one in town) that put on the Christmas program, but I do remember the "big kids" putting on the play Why the Chimes Rang. My mother was working in Chicago, but she came to Scandinavia for Christmas. I was pretending to be asleep in the early hours of Christmas morning when she came and put a sleepyhead doll in bed with me -- one of those dolls that had a zipper opening where you could put your pajamas. I don't think I ever told her that I had been awake.
My best friend in "Scandy" was the minister's daughter and I still have two the Christmas gifts she gave me over the years. Both books, one about famous hymns, and one about famous bible pictures. I never spent another Christmas there, but returned for many summers for several years.
But no matter where Christmas Eve was celebrated, during my growing years, Lutefisk and Lefse was always on the table. I ignored the former, pigged out on the other.
(According to my uncle, Lutefisk was codfish left to dry on the rocks of Norway; according to my brother, lefse, made from potatoes, flour and lard and cooked on a wood stove, was like chewing on your napkin.)