Yes you can drink in Utah! However, there are a couple of things to take note of. Establishments take carding seriously, so remember to carry your ID with you. Wine and Liquor must be purchased at a state-run store. There is one in Heber City, about ten minutes from Midway, and a bunch in Salt Lake City and Park City. Beer and seltzers can be purchased at a grocery store or gas station. https://www.utah.com/things-to-do/plan-your-trip/state-liquor-laws/ https://abs.utah.gov/shop-products/find-store/
We recommend that you rent a car. The car rental place at SLC is extremely convenient. Having a car will allow you to explore the area freely and will most likely be more cost-effective than taking Uber. We have never had an issue getting an Uber from Midway, but if you need to depart Sunday morning, it might take some time and be expensive to get a ride.