I'd like to think he meant a specific fetish in general not deep into the nitty gritty
I'll try to cover several fetishes, but each client/prostitute will focus on one fetish at a time. The dragon lady will be all about size play, the ant eater girl will be all about sounding you with her long tongue, etc. Only the receptionist will have several options.
The receptionist is gonna be a full NPC, with dialog, several sex scenes, etc. The rest of the people there will be pretty much like Vaande and Slave Reaha from Tavros' brothel, with a brief introduction and a sex scene, two at most.