Rural schools and schools serving rural populations may LOVE that you have lived in that setting and may have insights into the lifestyle of those patients that those of us who have lived our entire lives in urban areas just don't have. You'd have an idea of what suggestions for diet, exercise, stress reduction, sleep, etc just are not practical on a working farm or ranch or for folks living miles from retail stores, dependent on driving privleges, etc. so different from affluent urban settings.
For the second one, you really need to convince me that you have skills or knowledge that would be rare in the student body and valuable for other students to hear from you.