quicko: city center?

First off, the city center is called the CBD -- Central Business District. Which sort of explains this point, but not really: the thing is, Sydney city isn't all that happening when it comes to weekends. Yeah, there is stuff to do, but it can be a bit of a ghost town (especially around Martin Place and up Wynyard end) during the weekends -- its main purpose really does seem to be the Monday-Friday commerce and the people mostly live in the suburbs. Some areas are a bit more energetic (say, Oxford Street), but no matter where you are, it's ridiculously hard to get a hot chocolate anywhere after 6 pm, much less after midnight.