If u wan China mei mei...go Seven. Bit more atas place would be Bond. Mixed crowd go Alumbra. All these clubs open on Friday. As mentioned earlier by one of the bros...safer to go before 11. Oh...over here they practice the ratio thingy....so if u turn up with a bunch of guys, highly likely u get turned away when u hit the front of the line. Hahaha organisers dun wan a sausage fest in there. Clubbing on Saturday nite would be Scarlett or Bass. If all u kimchi lovers out there, Bass is the place to go.
Now for age group, most of them young uni students for the clubs I mentioned above except for Bond...that one has quite a wide age group. Here not like sg or msia...can see ppl in their 30s club like nobody's business. Most of the ahem...slightly elderly age group like me dun usually club freq anymore unless got special event.
Now for girls.....arrive at Seven in a flashy sports car with a stack of $50 bills, very likely can sian one. Whereas at Bond, no one gives a flying f what car u drive. To sian depends on ur KC skills. Alumbra also same thing but girls there a bit more friendlier provided u dun use a lame or creepy pickup line to turn them off.
But sometimes, u never know ur luck. I just went to Scarlett 2 weeks ago got a girl pick me up at the bar. Lolz she was drunk and asked me for sex. Thought I heard wrongly...mentioned it second time with a kiss on my cheek. Though about it...groped her ass and made out for a while but decided to pass to my fren instead. Knn just got in the club not even 30 mins then need to go (plus gf also staying over at my place) But anyway...fren left the club with her but outside she kept puking and made a mess of herself. He chucked her into the taxi, queued 45 mins and paid another $25 bucks to get back in. Lolz...I'm not good looking and she was taller than me. So sometimes u meet that odd one that needs sex that very nite.
Things to note while clubbing, bouncers here is the king. They are the one who decides to let u in or not...or throw u out when u drunk. And over here is when bartender hands u a drink...dun think, dun suspect that u got a freebie. Its the signal to the bouncer that u are drunk and out u go. Be nice and polite to the bouncer at all times

For dress code, the smarter u dress of course the better it is. Which girl would bat an eyelid on a sloppily dressed guy. Think about it, would u take a second glance at a girl clubbing in hoodie and jeans? Laws of attraction...dress to impress. Period
Hope this little info helps. For all the young yuppy adults, I recommend Bond or Alumbra.