Most G clubs doesn't offer sex upfront, unlike agogo bars and masssage parlors. The only exception is Pimp, Pimp Sister and Rao (not sure they still offer) and will only leave after the club closed or customer pay for outside booking which is not cheap or worth it.
The club gals and mamasan are smart and will usually take care of each others in even one got drunk and will personally send them home.
Although it's not a 100% no, some gals in need of money might have a personal arrangement and meet their regular client at the hotel or apartment.
Well, you need some luck or money to get under her skirt.
