I've met more than twenty Jetstar cadets who passed thru OAA/CAE. They all seemed to say pretty much the same thing, that OAA was a bit disorganised, but that it worked out for them and they are happy with the end result.
These twenty Jetstar cadets were over at least four intakes and it seems like the course has a completion rate of more than 90%, which is much higher than alternatives.
I've also known Sharp and Rex cadets and their experience and outlook seems similar.
The impression is that because the cadetships are selective entry, 2% to 3% of applicants for Jetstar, they get the cream of the crop.
A few times I've spoken with cadets whose attitude and dedication stands out. Things like massive amounts of pre-preparation, motivation and work ethic.