Just some general thoughts although it's been quite a few years since I did the interviewing thing. I would very tactfully remind folks at your upcoming rotations that you may have interviews to attend. Try to get an idea of what your rotation schedule will be so you do not miss days that may be "more important". If you have a few EMG or spine days scheduled, they shouldn't mind if you miss some of that. If you are working with the program director on the inpatient service for a week, I would obviously try and stick around. I feel "audition" rotations can play a big role in getting exposure and interest in you as an applicant, but it certainly can be good or bad exposure. You really need to be a solid medical student, but also shine while being an exemplary team member. (don't embarrass the resident too much, heh).
So yeah.. remind these programs ahead of time and gently remind them while you're there in a way that is tactful so there are no surprises. The last thing you want is for anyone there to make assumptions that you are anything but stellar and extremely committed during that rotation to increasing your PM&R experience/skills and learning more about their program.
Good luck!
