Just got back from Park City. Best skiing in my life, 3' of snow while we were there Feb 15-21. Alta go 100" but we stayed in PC. Felt very safe, of course on the slopes you are always masked up anyway. All dining on the mountain was reservation only. EPIC has a great App for morning of time slots for all the mid-mountain spots and never was an issue.
After early bad returns, seems like the EPIC-Vail reservation system worked itself out. We had to cancel at New Years and re-book (out of covid fears and lack of snow) and our 3 days of lift tickets transferred easily. Crowds were not bad, we had been told Presidents day week is like the Winter Break in UT, but we did not experience any major crowd issues. Stayed at our standby VRBO spot, Park Station, nice place , easy in-out, walk to town lift. Wife can shop and walk to Main St/Park Avenue.
First year no Ski school.....pros, get to ski with my 3 girls....cons, no single ski days for me anymore, but all good. Awesome trip, for me, Park City is the best spot all things considered.