Just a quick two cents about my interview day --
1) Everyone at Yale SOM is friendly and open to answering any of your questions. At this stage in the process, (almost) no question is stupid; ask what you really want to know about daily life. Find out if you can see yourself spending two years at SOM. And take some time to explore New Haven if you can!
2) The admissions office is really well-run, IMO. If you have any questions about your application, registering for your interview, or scheduling a campus visit, feel free to contact them via phone or email. Someone will either be able to answer your question or track down someone who can help you. Keep in mind though that the office is small; if you start pestering them every day about when results will come out or when you'll receive an interview invite, I'm sure they'll remember who you are (and not in a good way!).
3) The interview is not something to overly stress about. Others have already given great tips about the actual interview so I won't belabor those here; all I can say is know your resume, know why you want to go to Yale, and remember to breathe. The interviewer wants to get to know who you are; they're not there to trip you up!
Good luck to those of you who have yet to interview and to those still awaiting invites!
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