Well it is not really what gweilo do on saturday night but I would advise it for those you wanna try something different!
I went last night to Sam Tseng (not sure how to spell it, it is facing Tsing ma bridge) in New Territories to eat Roasted Duck...food is fantastic..strongly advise it.
After that we went to Yuen Long for a dessert and I would have never thought Yuen Long was so lively at Midnight...lots of food stall, dessert shops...really the same feeling as being in China....worth to try for those interested....