Brisbane is a little thin on the ground as far as Darkrooms for hire etc are concerned. However there is one at West End I have heard about that may be available. I will see if I can find the details for you
As far as camera clubs are concerned there are a few, however be prepared for a strongly digital bent, the reason I am no longer involved. Try looking at the Photographic society of Qld (www.psq.org.au) for camera club details.