We tried the helicopter tour in Hawaii as well. Even with autorotation and elevation, in most of the Hawaiian canyon there are no good areas to touch down without power. I thought about it the entire tour and didn’t really enjoy the ride.
A few weeks after we got back I read a news story about a family on vaca having helicopter ride with trouble and sitting the copter down... in lava.
If I would have read that before hand NO WAY WOULD I HAVE PUT MY KIDS ON A HELICOPTER!
The weird thing is I had a fear of heights but that ride was so spectacular it didn’t bother me at all.
We also went down on a sub. Snorkeled liked crazy starting at the crack of down. Fresh shrimp. A pigeon, who we named Stumpy cuz he was missing a toe, came into our hotel room every morning to eat breakfast with us. Great vaca!