I just had my interview at MUSC about two weeks ago. I'm sure this is probably too late for you to use, but hopefully it will help people in the future! I haven't heard any horror stories, and to be honest, this was the shortest and easiest interview I attended. The entire interview process only lasted an hour and a half. My interview time was at 3pm, but they tell you to arrive an hour early. During this hour, you talk with current students, and are allowed to ask them any questions you'd like. It was very laid back, they were all friendly, and all had great things to say about the program. During this hour, you also take a 30 question pre-interview test, which you will bring with you to the interview. It takes about 25 minutes to complete, and was actually pretty tricky. During the interview, there were five people present: The program director, assistant director, and three other professors/instructors. They asked all the typical questions you would expect (Why do you want to be a crna? How have you prepared yourself?) Also some tricker ones (Tell me about a time you've made a mistake). Some ethical ones (What would you do if you smelled alcohol on a coworker's breath). Everyone was very friendly, and you have the opportunity to ask them questions at the end. I spent about 30 minutes interviewing with them. Then you can talk with current students more, or leave!
Overall, the process was pretty good, but they did not have any sort of pre-interview presentation on the program, or a tour of the facilities. I ended up having multiple questions after I left because I was expecting a more detailed overview of the program when I arrived. So if you have any questions about the program (types of experiences you get, etc.), write them down and ask them to the current students or the faculty at the end of your interview.
A week an a half after my interview, I was notified by email of my acceptance! Good luck to everyone applying!