In my AMR interview for ALCO they asked stuff about personal qualities. For example, what are your strengths/weaknesses, describe a conflict with a co-worker and how it was resolved, tell us about a time when you had to go above and beyond, what does customer service mean to you, etc. They didn't asked scenario based medical questions or anything. They did ask what you would do if an elderly pt needed to go to the hospital but refused...
Basic stuff like that is what I would prepare for. Up here, they use the interview to see how well you would fit in to there specific program. Also, wear a suit or at least slacks and a shirt/tie, bring your resume to hand out to everyone, and always make eye contact and sweep the panel while answering questions. Make sure to shake everyone's hand and introduce yourself before beginning as well.