There's a chabad there. We did snowmobiling and loved it. We also visited the ice castles in Midway which was kind of cool, but mostly a tourist attraction. A car is certainly useful for Walmart, visiting Park City, etc. But depending on what else you do, you could probably get away without it
Looking to go to Deer Valley in Jan (staying at St regis). Which snowmobiling place did you do? Also considering the ice castles one day if I can squeeze it in. Planning on going Sun - Wed night, will ski two days.
Also kosher food at walmart/grocery stores was totally ok?