Just wanted to report back here that I interviewed today with 45 other people. Huge pool, it was their first Saturday session. They were definitely very organized and everyone working at the university was very kind, helpful, and enthusiastic, but- and not to scare anyone- I had a super high-stress interview. My interviewer enjoyed playing devils advocate with me and I did my best to cope with his questions. Everything I said was challenged and/or made to look like an embarrassment, but I stuck my ground while under the pressure (though probably less eloquently...). I hope that pays off but everyone else seemed to have low-stress casual conversational interview. I'd be surprised to be admitted after that bloodbath but maybe my memory is making it worse than it actually was. There's a brief short ethical essay, which is cake. I wish everyone else the best of luck!