Second year of snow camping. Verified with ranger that the campground is officially open during the winter, which is not exactly clear from websites.
Bring your own water since campground turns off water during winter. Recommend wrapping your water in a blanket so it does not freeze as fast ... after 3 days we had our 5 gallon container frozen one year. Sometimes campground restrooms are closed, but not to worry the Snow Park area keeps theirs open and is a short walk away.
Some people think camping in the snow is crazy, but really all you need is your snow play clothes, some extra blankets to use with your sleeping bags and an air or foam mattress to provide insulation from the ground.
Benefits of snow camping is you never run out of ice, no mosquitoes and more privacy than summer camping.
Ranger told me that occupancy is roughly 10% during summer months so keep that in mind.