Bangladeshis mostly, especially the ones in big all male groups. A Farang woman described it as "Like a gang r@pe waiting to happen", so that's another demographic that might be coming less. The more farang, more upmarket upmarket venues/hotels seem a little out of place with the street level demographics.
The Ambassador is opening a night club, I can already guess that the demographic will be big gangs of Bangladeshi men and a handful of those local "ladies" who have no other market.