After recovering from the 2am wake up call, my family really enjoyed the excursion.
We planned ahead and brought clothing to help keep us warm in the pre-dawn hours atop the crater, so the cold weather wasn't an issue.
It is a very easy ride (you brake way more than you pedal), but you need to confident on a bike. The road is open to automobiles and you have to maneuver several tight turns.
Stay alert, don't get mesmerized by the views and you will have a great ride.