I actually interviewed for the summer audit internship, which followed a strict recruiting cycle. I first interviewed on-campus with a manager, then I was invited to interview in-house with 3 professionals (director, manager, associate). All interviewers were very courteous and friendly, and never asked anything too demanding. I had conversations with my interviewers about school, sports, and even music. The firm really wants to get to know your personality-- they know that they can teach anyone decently intelligent with their training programs, so personality and cultural fit seem to be the most important things they look for in a candidate.