Welcome to the forum George, and look forward to any input/queries you have and hope your trip to Sydney goes well, a great city to visit in many respects -
Top 100 Things To Do In Sydney Australia Whale Watching Harbor Cruise Sydney Opera House Manly Koalas and of course for drinking:
The Rocks Pub Tour not that I have ever bothered and it's easy enough to do your own pub crawl, and did stay in The Australian a few years back - great original colonial style rooms at a reasonable price too if you want some special nights - ask for a room away from Harbour Bridge side, and the rocks has great weekend markets.
If you want some cheaper drinking and eating places, there's a few pubs up the central railway station end of George!, by George Street, Great Southern being one, not much character but Wednesday trivia night sees just about everyone getting free drinks.
We don't get so many chatters or chat sessions here yet but as numbers on the forum build (we;ve just accelerated away from the 1000 mark) so can chat and so people should not hold back.