PB the HK Aero Club is great for a beer or 20 and catchin up with old flyin mates and meetin new ones. Whats good about it is the Quake-generation kids tend to stay away and you get to hear a lot of stuff about real flying as well as hear the "There I woz.." tall storys after the booze takes effect! Beers a bit on the expensive side but well worth the social value gained.
And yeh there aircraft are too expensive to hire nowadays. Just stick to the Club p!ss-up nights.