I had 1 campus and 1 office interview. The interview process was quite detailed. They told me specifically to go into as much detail as possible for every question they asked. They had social evening before campus interview and I knew exactly who was going to interview me. The process was very friendly. Office interview was half a day long affair with breakfast and lunch. Beware, the partners or people about to interview you might sit beside you during breakfast and you wouldnt even come to know! So watch what you speak!