I don’t think I would force someone (or even want someone), who told me they didn’t approve of my wedding, to bake my wedding cake. It would be easier to tell them to jump in a lake and then go find someone else to bake it. Give them a bad yelp rating or complain to the BBB or something. Taking them to court over it is too much hassle.
It’s clearly not about the cake.
Clearly, but for myself I wouldn’t give someone the opportunity to pee in my soup.