Lan Kwai Fong can seem like an unchaperoned party gone awry for more mature travelers, but this open-fronted bar admits only those 25 and older, making it popular with professional expats earlier in the evening (happy hour is from 4 to 9pm) and providing a good view of the mayhem from its corner perch. Of course, the fact that rula bula translates loosely as a "commotion" or "uproar" in Gaelic gives hint to what can transpire later in the night at this venue that resembles any college hangout (this is, after all, also a popular drinking establishment for rugby players), especially after the DJ starts spinning it up after 10pm. Cocktails here cost about HK$65 to HK$85.