We rented a cabin between the parking lot and the start. So we could save 4 km, see the starry sky and sleep a good 3 hours longer.
The path is very beautiful but not easy and at some point you think there is no end (this applies above all to the way back). Take enough water and provisions with you and be in good condition. Those who can no longer sleep in the cold.
Who on the tongue should get up very early. When we were there the wait was 50 minutes to get on the tongue.