We really enjoyed this. As someone who is not good with heights, or with small planes it was great to be able to go up and see the views and get some great photos.
It was really clear the day we went. It is amazing how spread out all the parks are - really gives you some perspective.
The day we went, it was very quiet, we didn't have to queue. There was only one other group up with us, so it was easy to move around.
Definitely recommend it if you have some time to kill.