@IVCUSA11…Your only “big” expense should be airfare. Well, and the time away from your studies…which can be considerable if coming from out of the country. But you can use that “plane time” to study…or sleep. Primetime Shuttle from the airport is about $15 with a USC code, I believe. I also think you can plan to stay in a dorm with a student for the extra nights surrounding the interview if your airline schedule requires it. I think it may cost a bit extra, but not as much as a hotel room. Most meals are included and when not, there are reasonably priced restaurants on campus. It isn’t required for parents to attend, and although I attended the interview days with my son last year, he did do some “callbacks” at other colleges by himself. My son did this last year, so I don’t remember if you get all of this info in a correspondence from USC…but if you need special consideration…like a place to stay…give admissions a call…maybe they can work with you. I’m glad it worked for you to attend. Good luck with your interview.