Which pre-o are you interested in? The contact information is here: Pre-Orientation | Harvard College Dean of Students Office
First Year Outdoor Program (FOP) historically has been the most popular, but that popularity has meant, at least in the past, that not all who applied were accepted. The Arts Program (FAP) accepted all last year, including my waitlisted>accepted daughter. She loved it and made many/most of her friends in the program, including a lot of students who aren’t necessarily planning to concentrate in the arts, e.g. STEM students.