Ok, can i please just clear a few things up here, i have been reading most of these posts and a great deal of them are just plain wrong.
I have been through the entire Gap Year Recruiting Process this Year, and have been accepted, so let me enlighten you guys on a few things.
Firstly, there is NO BEEP TEST at your assessment day. The assessment day consists of a medical, in which you strip to ur bra and undies (i can only speak for girls here) and the doctor will look at ur build and physique, as well as asking you to perform a push up or two, then he will check your eyes etc.. a nurse will perform height weight and hearing as well as vision tests and preg. test for women.
Then there is a psychological interview, you cannot really prep for this, just a bunch of questions about you,, how and where you grew up etc..
Following that is the interview with defence recruiter, these are very nice people and they go easy on you, they will ask you about the gap year...TIP: there is a pdf (i think) on the net if you type in adf gap year - google; this will give you most of what you need to know re: training (training is a big one). Dont freak if you dont know the answer to a q. they will help you, they totally get that your nervous.
Anything else you guys wanna know from a credible source, ill be on here from time to time.
Bye!