It shouldn't sound awful. The point is, this is a small school. Professors generally know who you are, and what program you're in. One of our directors made the statement that "somehow... everyone knows you're a BMSer." So don't be a jerk, don't be arrogant, don't be aggressive or rude. Be courteous and positive when you're on campus.
I'm not saying accidentally dropping an F-bomb in the halls when a prof rounds the corner, or bothering a prof for help occasionally will = game over. But if you are consistently unreliable, annoying or aggressive and the wrong people hear about it, that is probably not gonna help you. NOR am I saying you should kiss ass. That's probably just as bad/annoying to professors (who are not idiots).
And to your point about MMI being less biased - yes and no. The system is set up to be less biased, but the people that interview you are still human beings. And many of them may be professors or other staff at RFUMS. What happens if you get a person you pissed off? Or who overheard you talking about how "unfair and awful an instructor Dr. _____ is" Will they be able to think 100% objectively? Why risk it?
Just use common sense, and don't give them a reason not to take you.
Oh, and a general piece of advice if you come to this program- Rumors spread like wildfire. Don't bother with them, it's really not worth it. They are almost always nonsense. Keep your head down, study and look out for that email that decides your fate