interview

Just general "get to know you" questions. Where you're from, what dorm you're in, what you did over the summer, etc. Sometimes they'll ask you if you have any questions for them, so come up with some good ones so you can avoid an awkward moment.
They're not interviewing you. Well, technically they are, but it won't be intimidating. The actives job is to be super nice and make you as comfortable as possible. I promise it won't be as intimidating as you think.
You're gonna get asked the same questions over and over again, so you'll be a pro at answering them by the end of the day.