I contact the campus recruiter through the PwC website because I went to a small school and they do not recruit there. I had a phone interview in September and then got an invitation to the office visit which consisted of a social the night before the interview. Then next day consisted of a presentation, office tour, and interview with a manager and a senior manager. Then there was lunch and a panel discussion. The questions were about my resume and were more of a conversation than anything. I received an offer the next day and accepted. Honestly you get to the office visit because of your resume and all they really want to see in the interviews is how well you fit in at the firm.