I received an interview invitation fairly quickly after applying, within about 2 weeks. I would think this timing a a bit atypical. I don't recall an option to select an off campus interview, but I was planning to do on campus anyway. They have a full day of programming for your interview. They block everyone off into "interview super days" every Friday for a few weeks in a row, where they bring in big chunks of interviewees, probably 100 at a time or so. There's student panels, class visits, and other activities. You are slotted into a morning or afternoon interview time. You aren't required to attend the additional activities, but it probably helps you get into the swing of things. Current 2nd year students take chunks of students (probably 10+ at a time) to interview in conference rooms around the building. My interviewer and I had great instant rapport. It is a strict 30 min interview and it flies by. We hammered through the the typical questions, why SOM, why MBA, ST/LT goals, walk me through your resume. We spent the most time on the resume, really digging into specific bullets, drilling in on actions and results from various work activities. So be prepared to know your resume inside and out. We didn't have time for much else as he had to get back to other interviews. At the end my interviewer gave me great positive feedback and his contact information. He was very warm and friendly. My advice would be to participate in all the available programming as it will help you mingle with other interviewees and set you at ease. SOM is not trying to trip you up in the interview, they just want to have a quick chat so no curveballs. While your actual interviewer may vary, nearly all SOM students are really kind, friendly people.