I was at Heavenly this past Sat and Alpine Meadows on Sun.
It’s what I have dubbed Winter Spring conditions. What this means is that the groomers and what off-piste is open is hardpack and borderline icy in the morning. Depending on the weather, it usually gets softened up by around 1ish, making for crisp Spring like conditions on most runs.
I found the groomers at both Heavenly and Alpine were decent. They were hard, borderline icy, but enough people had carved off the top layers of “marble” and kicked some soft windblown side effects to the curb of the runs. If you stuck to the edges you got faux fresh.
Not great conditions by a long shot, but decent enough for 4 hours of hard riding by yourself.
Also the crowds are thin by normal standards. That said, Heavenly is still a bit crowded mostly because so much of the mountain is closed so the few people that are there are all crammed on the same runs.