Hello David,
I like to go to Rooty Hill RSL -
Rooty Hill RSL Club, Sydney - Health Club, Function Rooms, Live Music
It's out of the city but there are lots of people, resterauts, spas etc.
There are 4 restaurants and the prices of the drinks vary (as do the crowds for the resteraunts).
The other (German themed) bar I like is Una's, and these are scattered throughout Sydney.