Just got back from my trip from the 14th-19th and I was happy. The SNOW Bus is a great resource from traveling between the resort and Whitefish (just make sure to board the bus from the Base Lodge, because it stops there first and fills up quickly). The resort offered plenty of variety with the terrain and over the course of my trip I was able to work my way up from the blue groomers up to the black diamonds on east rim.
Most reviews talk about a lack of lines at the lift and that wasn't my experience at all. With so many people able to work remotely due to COVID, the surrounding area has become flooded with people from the west coast. The average wait time for Chair 1 was 15 min for me, and most other lifts were on par or sometimes worse. If you like moguls and trees, Chair 5 at the East Rim was by far my favorite to use because the line was always less than a minute's wait.
Visibility was poor most days so make sure you're familiar with the trail map to prevent yourself from getting lost.
I didn't see any reviews mentioning the terrain park, so I'll say that there are jumps going all the way from small to medium/large and plenty of rails and boxes.