Yay more Aussies! And being from Adelaide you'll fit right in! Adelaide is the only other place that I've experienced the kind of dry heat like there is at Burning Man. I was there in 2008 in the middle of a crazy heatwave.
I went for the first time last year and am heading back again this year. I'll be in the States for 7 weeks all up, also in the Bay Area when I'm on on the playa.