I had an interview in January and I have to say it is not bad at all. It is open file and there are three people in the room with you. All three of them are very nice and they know a lot about you before you even get there. I noticed that a lot of the questions were asked so they could find some more personal things about me. All three each had their own questions and they fire them off quickly, but they are all questions about you so you already have the right answer. Only a few question where about Optometry, but i am sure you will know what they are asking since you are interested in the field to begin with.
The whole day is pretty relaxed overall I guess the only bad thing would be that if there are multiple people being interviewed, someone will have to wait a few hours to get to the interview and some will be in and done with it right away. I was the first of four, so I could be relaxed during the other parts of the day which include a tour, financial aid session, and a short video about the business program. I was actually done with everything and went home before the final applicant even had her interview.
During the tour you will be able to ask tons of questions about the facilities and you will see pretty much everything.
Don't be worried and be confident in yourself and it will all be okay.
if you have Any other questions, just ask. ill try to help.