To address the call issue, Baylor doesn't make med students take overnight call during core rotations. The latest they'd make you stay on a call night is 10 or 11 pm. The latest I've stayed was 1am on Medicine at the VA, but that was because I wanted to finish a writeup before leaving. (Medicine H&Ps at the VA can be mindnumbingly, droneworthily long. I ended up staying up all night editing the dang thing and didn't bother sleeping because I was going back at 530am to pre-round anyway.) You can voluntarily take call if you wanted (really, no med student in their right mind would unless they were dying for the experience) but there are no call rooms specifically for med students, so you couldn't get some shut eye if there was any downtime on a call night.
During your sub-i, you get to do q4 call with your team and/or your upper level. You still might not get a call room, but most call nights depending on the service would probably keep you up all night anyway. So don't fret, there're plenty of chances for you to take call and you could even be a masochist and take on more than necessary if you wanted (e.g. by taking SICU electives - their calls are notoriously brutal and were recommended to me by an intern to prepare for intern year.) But trust me, by the time you get to clinics, you may be singing a different tune as to "wanting to prepare for intern year." And I think no matter how many calls you do as a med student, that first night on call as an intern with real responsibility is still going to be bone-chillingly terrifying and will still require a steep learning curve.
My take has always been, I'll learn what I need to learn during intern year. That's what it's for. You'll have plenty of call to figure it out then. Intern year is already going to be dogged and will induce chronic fatigue, so why extend that misery to med school? Med student rotations should be about learning as much subject material as you can and for that to happen, you need time to read, digest, and absorb. While practical knowledge is important, there's only so much pathophys and clinical management you can properly learn and understand by just admitting and following patients. Not to mention the shelf exams at the end of the rotation that test your book knowledge, not how well you are able to stay awake all night to admit patients and write orders. Attendings will also make you read up on patients or a topic of their fancy on your own time. It's very hard to have energy to read when you don't get any sleep every four nights. In that scenario, all I would wanna do when I got home would be sleep. Even without having to take call, it was hard to be motivated to read because every day was so tiring in and of itself.
