Brief review of the format: there's one 3-on-3 group interview and one 1-on-1 interview. Both are "semi-open" file - they see your writings, but not your numbers. The interview day runs about 7:30 to 4, so eat breakfast and be ready for a fair amount of walking. Much of the panel interivew involved all 3 of us answering the same question, so although we weren't directly competing against each other in that sense, the committee could have compared us if they wanted to.