Well Brendan im sure your openday will be similar to the one we had in Sydney... You que up hand in your resume with your photo and basically leave. They tell you if you have been short listed they will contact you by 5pm. I got my call at 4:58!
Try and make interesting conversation with the girl when you hand in your resume. Say something funny & just be yourself.... I made a joke and it seemed to work! It basially turned out to be 3 days all up. Try and get the Wednesday for your one on one so you can get sorted and have all your paperwork done for it! As your group interview would take place on Sunday.
Stress comes after the "golden call".. you have mountains of paperwork and medicals that cost a fortune! But all worth it
Hold in there ChinoA! I waited 4 for mine to come...
D