I didn't interview with anyone listed above, mine was a skype interview with Dr. St Jean. He was really nice and spent most of the time talking about the island and asking me what I did to unwind after class. I felt like he was already happy with my Gpa and GRE scores so was just making sure I was a good fit for the school/island.
I'm at ross right now and I've talked with all my friends and they had a similar experience - all their interviewers were really laid back. Be sure to have some sort of travel anecdote prepared (I just talked about going on a cruise to the Caribbean) and some sort of "trying new things" story too. I talked about how I raised cattle in 4h and how my family knew nothing about livestock so I had to figure it all out on my own. They're looking for qualities that'll help you live on an island away from the comforts of home.
Don't stress too much about your interview, do a little research on your person and try to throw in some relevant tidbits to their interests if you can
Dr St Jean is a large animal guy so I think he really enjoyed my cow stories.