I let my boys head off on a kayak adventure. It was two hours. They took a phone so they could map their progress on GPS if they needed to. I took a photo of them as they headed off, then a very relieved photo when they found the bridge landmark we'd all agreed on.
We explored caves for most of Sunday. (There's also a shot here of the skylight of the yurt we stayed in.) There were also thermal pools near the caves.
The barbecue area was amazing. It had quirky art installations and was so well set up. It even had a home made fish basket for barbecuing fish.