Alternate Solution for Road Runner
I'm sure the Marriott is very nice, but let's get your priorities in order now. Why pay a high agency price for an unknown quantity? Why not state to your colleages at 10pm that you are very tired and need to rest. Then book your own room at the Dynasty Inn on Soi 4, 80m from the Nana EP.
Only 1280 Baht ($35) for a small but clean, air conditioned room. This way you can make your own decisions (afterall, only you have the finely tuned sense of what makes a girl hot). No need to waste time in NEP as you can sample 1 or 2 ladies from the Nana Hotel parking lot (across street, 40m away from Dynasy Inn) until you are happy (1000-1500 Baht each). $35 for hotel is well spent!
[url]http://www.dynastyinn.com/[/url]