Back to the OP,
My current woman used to work a little Thai on Thai 'bar scam' when she was younger.
If she needed any money she'd walk into a nicer bar/hotel, and get the barman to put a 500bht bottle of whiskey on her table with the intention of getting a refund from the bar man (50/50 split).
She's wait until one of the bar staff came over and said 'that guy wants to sit with you', and she'd reply 'can he pay for my drinks?'. The guy would come over to her, the bottle would go back behind the bar, and she'd enjoy dinner, drinks and a refund on the bottle from the bar staff when she left (with or without the guy).
250bht in those days was 2 days work (early 2000s), with a free dinner and drinks thrown in. Never had to wait long as she was really pretty when she was younger.