, I think all the customers did as well as the new ring the bell promotion went down a storm - every lady drink (alcoholic) is only 100baht and the thing hardly stopped ringing all night making for some slightly intoxicated girls in bikinis. 100b I hear you say, yes - 100b for each lady drink and its alcoholic - so 15 girls in the bar is total of 1500baht. Every lady gets her commission and is happy so much. If you think Bangkok is expensive think again.
So is the condition the lady drink will only cost 100 baht "IF" you ring the promotion bell?
Just curious as I payed 180 baht for a ladydrink there one "afternoon" in January 
Lady drinks on a one by one basis are regular price plus 30b so in that case, it would have been 150b drink, the only one I can think of at that price level is either a Bacardi Breezer or a full blown cocktail such as a Margarita. A cola is 110b, Regular whiskey soda is 130b, JW Red Label is 145b, Jack Daniels is 160b (all these are LD prices, not customer).
The 100b per girl offer is for ringing the bell and avoids customers getting big shocks, i.e. they see 15 girls and they know its a 1500b bill - the girls normally choose Sambucca, Tequilla, whiskey soda or the current most in vogue drink which is Absolut strawberry vodka with Sprite. To some degree its worked out in advance which drinks each girl prefers and the bar staff know accordingly what to serve given there are often 15-20 girls in the bar at any time, speed is of the essence. However some girls do not drink alcohol at all and they have fruit juices normally.
