My 10 year old wanted to do zip lining so we scheduled it in and we all enjoyed it tremendously. First and most importantly, the staff inspired great confidence in their professionalism and focus on safety. They were also very nice guys, helping us all to get photos.
The Tarzan jump was a good start but for us the most fun was the zip lining especially the longer ones. It was simple to learn and completely different from other activities.
For my part, I wouldn't have minded hearing a tiny bit of information about the trees - it was interesting to see the very old ficus for example. But the afternoon was reasonably fast paced so maybe that would have bored the group.
We attended an afternoon session which meant we finished up in beautiful late afternoon golden sunlight over the canopy and views out to the sea which was magical.