Def above. UCLA has only about 6-8 interviewees per session (1 on 1 interviews), whereas WesternU had 100 of us there on the same day, split into 4 groups of 25 (2 on 1 interviews). LLU was single interviews thoughout the day, only about 2hr max (go in, essay, interview, tour, done). USC (when I interviewed in 2017) was probably like ~30 interviewees on the same day, split into 3 groups of 10-12, for a group interview (I believe they only do MMI now and no longer have group interviews but idk).
These are the only schools I know cause those were the only interviews I chose to attend 😀