Current student here. I was in your shoes in February! Seems like so long ago! We're in week 5 and it feels like its been 5 years. If you have any questions, feel free to message me.
I interviewed at both Western, Oregon and Western, Pomona. I feel that the interview days were similar.
For MMI, you will not need to take any type of notes before, during, or after. Google MMI and you'll get an idea of what to expect. I can't tell you much about exactly what goes on, but It's low stress, so just be yourself, and you will be fine.
I believe I stayed at Holiday Inn in diamond bar. Diamond bar, Montclair, Clarement, and Chino hills are better areas to stay in.
Majority of my class is from in state, mainly SoCal.
Interview day will only be stressful if you make it stressful. The staff here do everything they can to make it as low stress as possible, so when you wake up on your interview day, do some stretches, say some positive affirmations, and smile, it will be fine!