Here is an article lamenting the lack of night life in Sydney city. Don't forget that Sydney is one of the more cosmopolitan city in Australia. Its a good thing that they are trying to brighten the city up a little more after dark. I remember walking in the city at 2-3am in the morning and the whole place is dead! Very peaceful when you can just hang out at the opera house, then walk through the botanical garden right next to it.
http://www.smh.com.au/lifestyle/late-night-live-20121023-282g1.html
http://www.smh.com.au/lifestyle/late-night-live-20121023-282g1.html
That clarifies my questions. Thanks!