I realized I sounded too harsh. About your other questions, you should ceratinly browse the catalog of the med schools you interview at. However, the best source of information for some of the questions you have will be med students themselves where you have an interview. I will let you in on a secret I saved for my own applicants. Leave for the interview the morning of the day before (if it is out of town), check into the hotel/motel where you will stay overnight, then head straight for the med school. Try to find med students. Look in student lounges. Ask your questions of the med students; for some of the questions people have it is useful to find med students like themselves in gender, age, etc. Among other questions be sure to ask them they are happy campers, why or why not. Ask about the interview process itself. Ask if one of them can you a quick, unoffcial tour of the school. When you arrive for your interview the next day you will not arrive late, you will be less anxious because you know what to expect, the layout of the school, etc. If you want to make a real impression on the interviewer, stay over that night and appear the next day looking for the interviewer. "I have a question or two I forgot to ask." That interviwer will not forget you. Sure it is expensive, but it may be well be worth it to you. And if the school is in a town unfamiliar to you, try to find time to take a walk around beautiful downtown wherever. You want to know if you can live in that town for 4 years.
I learned this from one of my own students years ago; he was accepted to every school he interviewed at. Of course, he was personable, had high grades and MCAT scores,
but many of those schools were well out of our area. In the end, he chose U North Carolina at Chapel Hill, a NC state school. He was a NY resident.