I don't think QF has open days to have an interview...
QF Cabin Crew Australia Pty Ltd hasn't looked for new crews (Long haul)since Jan 2008, That's what I remember...
If you are interested to be an QF Cabin Crew, Visit this web site
QF Cabin Crew Australia Pty Limited Recruitment: Attention
and keep eyes on this web site. At the moment they are just accepting interests...