Dunno lor, feel free to doubt what I'm saying, just telling of my experience there nia.
Basically, a few girls at the door repeatedly asked "kon thai lu pow wa"; then when I kay siao just te gong they keep pointing and asking basically if I were thai and if I understood thai... in thai. I kept a straight face through all of it though. Either way, when we tried to walk past them into the go-go, they stood in the way and wouldn't let us in.
Hmm.. how I was dressed that day. Standard working attire lor, long sleeve shirt, pants, leather shoes etc. Just that I also have the neo-jp/korean hairstyle thing going that is so in fashion around these parts.
Anyway, the bottom line is, it was probably a good thing we didn't go in. We started at one end of the street, went into each bar, had a beer, then walked into the next. Nothing caught the eye. Mostly the short/dark type that ang mohs love so much. From now on I'm just sticking to NEP for my go-go-goodness. Got jaded and tired of it a while back... going again after so long makes the whole thing seem new and fun again.
And the girl I picked up a year ago is still there and recognises me!
So, yeah. Just my 2 satang.