We did the tour of the volcano and the bike ride down. It was excellent. There is some peddling required so being in reasonable condition helps. There are a great operator that is well tuned at getting everyone outfitted and on the way.
Our bike ride down was self guided and we stopped several places along the way. One of our group took a wrong turn and they had to go pick him up. They did that with no problems and no charge - thanks again for that. We'd recommend this for a great family event with older children near or in their teens.