You're split into 3 groups, so your schedule will vary depending on which group you get placed in. But your whole day consists of the interview, school tour, Q&A sessions, and lunch.
The interview itself was really fun! I personally enjoy MMIs better than Traditional interviews so I might be a little bias.There are 8 stations with one interviewer per station. You have 6.5 minutes per station including 1.5 minute to read the prompt and transition. They'll tell you all of this again at the beginning of your interview day. So for Rosalind Franklin, they actually allow you to take notes while reading the prompts. This kind of threw me off because all of my previous MMIs didn't allow note-taking. So I didn't bother to bring a small note pad to write on (I really wish I did). So my advice to you is to bring something to write on. If you forget, don't panic! I ended up writing on the back of some flyer/information paper they gave us in our interview folders.
Hope this helps and goodluck!