Hey guys, I'm a current M2, soon-to-be M3 starting in July. There are a good number of current students on SDN that'll be around to answer questions throughout the application cycle. My advice for applying to NSU is to submit your app as soon as possible. Earlier app => earlier secondary => earlier interview invite => earlier interview. The interview dates fill up really quick here, so if you get an interview invite, make sure to select a date right away instead of waiting a day or two. As for the interview itself, it's usually 10-15 minutes long with a panel consisting of at least 1 physician. Know your app, prepare good answers, be yourself, etc.
The app cycle is stressful, but we all survived and you'll get through it too. Good luck!