Coming from FFXIV, ERP can be done right as noted above. One of my FC members runs a brothel on her other character. Date auctions are fairly fun too and don’t need to evolve in to ERP. It is just a great way to meet people and expand your network.
I hail from Balmung and have been there since the calamity/relaunch. I’m used to trolls being all over, especially in the sands. However, I do warn that if someone does decide to start a brothel group that you do so carefully.
Screen your courtesans - You don’t want to have a minor seep through.
Set boundaries for customers - Some people will only RP certain things. Make a list of what each member is willing and not willing to do.
Drama will happen - either with a customer or Courtesan. End it ASAP.
I highly suggest having members that don’t erp as well, as amazingly, some people just enjoy the story it creates of their character going to a brothel and then fading to black.
Plus the bachelor partying is fun as hell.