Hi Sam,
to IIS too!
You might also like to look through the
Star Parties, Club and Community Events forum. It regularly holds info on formal and informal get togethers. Two popluar informal regular meets happen at the Katoomba Airfield and the Pony Club at Mangrove Mountain north of Sydney. You'd be most welcome at either site, which ever is most convenient for you to get to.
The link Adam's given is a good one.
You can also look in
Club and Society Listing for NSW. These all have regular meets at dark sky sites.
Other places in the Blue Mountains are Hargraves Lookout and Mt Blackheath Lookout. Hargraves has a wider horizon, but is very exposed and if the wind is blowing it is freezing. Mt Blackheath is more sheltered, but the sky to the east is obscured by trees.
Where ever you go, the most important thing is to find a place that is safe. If you go to a public place like a park, go with a mate.
Mental.