Yes, you need to be 21+ to enter and have a valid form of ID such as: A valid passport, A valid U.S. driver's license, A valid military identification card with a date of birth and a photo or An official U.S. state-issued identification card.
Via visitsaltlake.com/plan-your-visit/frequently-asked-questions/drinking-in-utah/#:~:text=You%20must%20be%20at%20least,of%20birth%20and%20a%20photo.