I interviewed there. You are divided up into three groups for interviews at 9, 10 and 11 AM. So you either interview then do some touring or tour then interview. The interview is open file 3 on 1.
Make sure to get there a bit early because the parking map they gave you is not accurate. I really liked it there for a couple of reasons. Location - obviously in OK. Students/Faculty - they really care and interact a lot. Hippocrates system - simply incredible (you'll see it on the tour). First year patient classes.
Good luck to you.