There are 2 other bars/pubs that you may go to,
Mei Lang Fang (we called it "M-bar".)
14 On Wo Lane, Sheng Wan, Hong Kong
It is a bar with lot of ppl on Friday and saterday night. But please note that you cannot smoke inside the bar (it is in G/F, so you can enjoy it outside.) also, there is no place to dance, usually, ppl just to have drink and meet their frd in Mei Lang Fang, and then go to PP when it is 2. (Yes, ppl will only go to PP after 2 am.)
Volume
www.volume.com.hk
LG/F, 83-85 Hollywood Road, Central
There is dance area, but it is a bit small (only half of PP). There are a lot of foreigners and "potato".
Since they are quite close, I suggest you may go to M-bar to have a drink first. And then you can go to volume to see whether you like it or not. (Only 3 mins from M-bar, just ask someone in M-bar how to go to Volume.)Although you have some unhappy experience in PP last time, I still suggest you go there after 3:00. I dont know why, but PP is popular again.
Many gays have registered in www.fridae.com . Maybe you can date someone whether than go there alone.
Enjoy your time in HK.