Why would anyone want to...
There could be a person in business that offers one service and one service only. Let's pick something ridiculously obscene like singing a really homophobic song followed by a sincere lecture on why gays should be isolated from society as pariah. This is the only service sold by the business owner. Perhaps the owner opened the business thinking someone like the KKK or some other nut-job group would be the primary customer and that's who the owner really wants to work with anyway so that was fine by the owner.
Fast forward to a time where gays see entertainment value in some fool who's willing to stand up in front of everyone and do this thing (perform this one service). So we have a pair of engaged gays who want this entertainment at their wedding reception, and they want the whole enchilada. They want full KKK regalia, lights (darkness!), sound, fire, everything! I can see this happening for one reason if not others: There are folks out there who'll pay money for just about anything and for reasons that would leave others with spinning heads trying to figure out "Why?"
The business owner would have to provide his/her service to one as they would to another. Why anyone would want this service would not matter.