People are required to participate in a homosexual marriage?
When did this happen?
The photographer, the bakery, et-al.
I have no doubt that soon if they send you an invitation on face book to come and watch them play dress up and you don't show up you will be forced to have a doctors note or be punished.
It has become something like a performance by Nero. As of yet no one has admitted faking going into labor to get out of it but the key word is "admitted".