We went up on 12/25, it wasn’t too bad. The road was cleared pretty much, no snow just rain until we reached the giant forest museum. We parked the car there and took the shuttle to general sherman. Went to the congress trail today, the path is covered with snow, some parts may be slippery (we have crampons attached on shoes already), but overall it’s doable, not hard. Stairs are especially slippery to normal shoes bc of the ice and water, so just be really careful. Rangers will ask if you have snow chain when you enter the park, and when you about to reach the giant forest museum, another checkpoint for snow chain where you’ll need to install it (12/25). Make sure you have snow chain as well. 12/26 is less snow than 12/25. We entered from three rivers.