Please take a moment and update your account profile. If you have an updated account profile with basic information on why you are on Air Warriors it will help other people respond to your posts. How do you update your profile you ask?
Nobody will give a shit what you're wearing, and most people won't even know that you're applying for an officer slot. I wouldn't recommend wearing a nice shirt and slacks because you're going to be dressing/undressing quickly, and it's a pain in the ass to do that with dress clothes.
A pair of proper fitting, unripped jeans and short sleeved polo shirt is the best option.
What time should I show up? I know a lot of the recruits that are enlisting stay in a nearby hotel and are bussed over. I was going to drive over (it's only about 2 miles south of my campus - MSU). So, what time should I be waiting outside?