DY
The Cake is the issue. Should a Bakery be required to Bake a Cake saying Mazal Tov Reuven and Shimon, Is it really any different than baking a cake Mazal Tov Berel and Christine?
Somone earlier said it would be a chilul Hashem to bake a Mazal tov Reuven and Shimon cake because word of mouth would come out that you baked such a cake. I can almost be 100% sure some frum baker baked a Mazal Tov Reuven and Christine Cake. They probably did it quietly