sorry but u sound like those con-man prowling around the tourist areas in SiamSqaure and Sukhumvit.
think this service wont work as there will be others just like u who like to venture on their own in their own group and w/out having to pay someone to join their fun?.
maybe u can share more in details as what you mentioned " I know most of the night scene there" in your 13times trip there, as in what kind of joints and your comment on those places. thanks.