I'm just curious as to what you all wore (or plan to wear) for the interview? Men and women.
Thanks!

a long casual dress

I wore a brown dress (below the knee length) and brown sandals (it was warm in Rio). My husband wore a long-sleeve button shirt and slacks. We were more dressed up than the majority of the other people there, but I didn't feel uncomfortable at all. There were people in shorts and t-shirt, but they were getting visas/passports for their adopted brazilian children. If I were you I wouldn't go dressed like that! Just wear something comfortable and not too casual. In my opinion it's better to dress up than dress down.

My advice is to dress exactly the way you would be dressed for a job interview

Thanks for the advice.
I told my fiance he should probably wear a dress shirt/pants/shoes and I figured I'd wear what I do to school (I'm a teacher). I agree that it's better to be too dressed up and it shows you're serious and professional.

I was wearing black formal pants and a crossed shirt (like Nessa said, dressed as if I was going to a job interview). There were girls in jeans and I think as long as it's not too short, tight it's fine. I'd say guys are fine with jeans and a buttoned up shirt or polo.

Exactly!!

The most important interview in your life (well second most imp. - the next one is AOS interview).
- and haveing all your paperwork in order, because without that, doesnt matter how your dressed .