Hi mate , I done oz intro back in 09 , it was really good . I met loads of people and the group I was in ended up travelling up the east coast together that was about 12 of us all together. It definitely makes the first week easier , they help you sort out anything you want to do from setting up your bank,phone , tax number and loads of little bits . They take on pub crawls and doing different things you might not usually do. I would definitely recommend doing it , just don't book all your activities through them like whitsundays and Fraser Island as they are more expensive , wait till you get there as it will be cheaper , they are a travel agent after all