MS1 here, maybe I can shed a little light on this. It doesn't hurt to ask but tbh I'm not sure how much they can tell you unless you have a plan for the research you want to do. There's 4 tracks you can choose from: RUOP (basically you go to a rural area for 6-7 weeks and do a public health project), Scholarship of Integration (a literature review), Scholarship of Discovery (original research), and GHIP (the global health track).
If you do a RUOP, you'll be at your site for 6-7 weeks, while the remaining weeks are off. Lots of students take the remaining few weeks as vacation. Your RUOP can be set up so that you start at the beginning of the summer and have the last few weeks of summer off, or you have the first few weeks of summer off and then do your RUOP. I know for RUOP there's a survey you fill out by early January where you can state your preferences/anything UWSOM needs to know about beforehand to help in placing you.
If you're doing a lit review, you're probably gonna work on it remotely throughout the summer so that gives you some flexibility. If you're doing a global health experience, you'll be gone for almost the entire summer (not 100% sure since I don't know much about it and international travel's been suspended for E-20s). If you're doing original research, then you may either work remotely or have to work in person.
Basically, it really depends on what you want to do. Especially with COVID, things aren't 100% set in stone which makes it trickier.
Hope that helps!