I've probably been on more aviation related booze crawls than you've had Sunday roast dinners. Most I prefer to forget!!
Tried that - nothing comes up on Dunnunda Search. I'm sure there are PPRuNers, including this Woomera, who are not personally familiar with the "Caz Crawl" and require enlightening.
Perception leads me to suspect it is some primitive heathen procession performed in the Northern Territory at midnight on the winter Solstice?