haha, great eye candy that's gold so free membership for her
There is no sign up mate you just start coming out on some of the trips and if you like what you see and the people around you we can put you through the "right of passage" and it will involve Tequila :P
The age group is from P plate 18 to 60+ and most girlfriends and wifes come and wheel and camp out so I am sure your shy wife will be fine but THE DISCAIMER: "I am not responsible if your wife is not so shy after hanging out with some of the girls!"
Also checkout on Facebook
Jeepaholics Anonymous - Australian Chapter for some trips and general Jeep chat.
https://www.facebook.com/groups/293790214027781/