Most of the girls if the do take up your offer for an "overnight" generally only allow you 2 shots. 1 at night and 1 on the morning or on however you arrange it, me myself have never had more then 2 pop in a row so iยดve never tried to convince the girl to let me "enjoy" her more.
The risk of being raided is always there.....the best option for preventing raid is know your girl and taking her back to your hotel and not staying in the brothels house.
And if I do like the girl and I feel like the girl likes me i usually get her phone number so i can call her again for some GFE and not only business, sometimes i feel like these girls need a "shoulder to cry on" and the feelings mutual sometimes hehehe.