Alright, this'll sound a bit daft, but I was wondering, what does the dashing wannabe about town wear to a gig like this?
Not a daft quetestion, but have it in mind that this isn't an interview, you're not being judged. I went in t-shirt and jeans so not so dashing

(funily enough 6 years ago too!) and used it for what I wanted, as a means for me to assess my suitability for the game. There is no recruiting angle to this at all. Your result is between you and GAPAN only.
As for the tests, cleary some of the stuff you either can do or you can't. But my impression was that two key attributes that you can take with you on thw day are anticipation and prioritisation. You will have to make quick decisions and you will be overloaded so look ahead and don't fixate.