Today, I woke up at 3am after 2 hours sleep to get to my 7.40am interview with the Air Force. I went through a full medical check, a psych test and an interview with military personnel, was there for 7 hours with no food and only water to drink, only to be told I wasn't suited to the position I applied for. FML
Woah, okay. Let's go.
MEPS - I don't know what the hell this is, but it doesn't exist in Australia.
Qualifications - You could have all the qualifications in the world, and still not be suited to a position. It's sad, but it's true. The OP said nothing about qualifications, and pretty sure general entry into the Australian Defence Force only requires you have your High School Certificate.
Sleep - Perhaps nerves kept her from getting a good night's sleep. Understandable if this job meant a lot to her.
Preparation - Sometimes, no amount of preparation can quell one's nerves, particularly with things of great personal importance.
Time - I have had an ADF interview, and on the letter it says the process should take four hours. Also, you have no choice about what time your interview is.
Food - The OP obviously believed that it wouldn't take much longer than 4 hours, so didn't feel the need to take any food. When I had mine, there was no food available for interviewees, only tea and coffee. And I, for one, was too worried that I would be called to one of the interviews while I was out if I went to get food somewhere else.
OP, FYL.
YDI