Sorry, I meant to reply and then I thought I'd just wait until after I interviewed everywhere so I could post a re-cap and then I sort of forgot for a while
So all in all, I applied to 3 schools: Georgetown, UMD, Columbia, interviewed at all 3, and was ultimately accepted to Georgetown and UMD, rejected at Columbia.
Thoughts are as follows:
Georgetown: my first interview---program directors and faculty were very gracious and welcoming. They definitely had looked over all their applicants when picking out the questions they wanted to ask at the interview. Besides basic interview questions, they also pointed out perceived weak points of my application (for me, this was my grades) and asked me to explain why things were the way they were and how I hoped to improve on this in the future. For another applicant, it was their choice to leave the ICU and work outpatient instead of staying critical care, for another it was their short duration of ICU experience, etc. No clinical questions, though I have to add a caveat that they know my hospital very well, so perhaps that was a factor. People felt that the interviewer's reactions to questions were difficult to read, but I would say that my interviewers were willing to smile and I didn't feel they were as cold as some people said :)
UMD: I'm actually surprised I was accepted here as the interview did not feel like it went well. Again, no clinical questions, but interviewers definitely pushed me to answer questions on things like coursework past nursing school, CRNAs in policy and advocacy and why I had/had not done certain things in these areas. They also had some more curveball interview questions. My interviewers seemed generally dissatisfied with my answers and pushed for clarity. I got a lot of "you're skirting the question" or "that's not exactly what I'm asking". Adrenaline/anxiety level during this interview was definitely the highest.
Columbia: Generally laid-back interview, and I thought it went okay, though obviously this was not a successful venture for me. During the waiting time, students worked with interviewees and showed them how to intubate, showed them the SIM machines, etc. I honestly thought it was a lot of fun! This was the only interview that asked me if I had a plan in place for finances/support network through school.