This is a Hong Kong must do. I walked up in jeans and trainers and wasn't questioned, but due to the kind of people the bar attracts I did wish I looked a touch smarter.
Anyway, the drinks are expensive, but the view is priceless. You look out over the harbour and the lights of the skyscrapers on the Hong Kong Island side of the harbour.
That view should be enough for anybody, but gentlemen get a little extra. I'm not going to say exactly what it is, as the surprise is half the fun, but make sure that you pop into the restroom before you leave. I bet you'll laugh, and I guarantee you'll tell your friends.