I don't know about florists or bakers but photographer must intimately work with the couple (including performing at the wedding) to capture an artistic vision focused on the pairing. 2 men or 2 women (often with absent families who refuse to participate) dramatically shift the core of stock poses. Two grooms? No veil, no garter, no 'bride'.
There is a lot to consider. Watch this lengthy lecture on the stock composition ideas of wedding photography.
Back to Basics: Wedding Photography
Not to mention looking through the view finder to capture 'the first kiss' at the wedding.
Why should lawyers be the only workers to be able to refuse a client?
I have a feeling lots of gay couples will be getting fuzzy and slightly out of focus wedding albums.
Sometimes people forget to remove the lens cap.
First question: “Which one of you Mary’s wants to play the bride?”