We really enjoyed this Day Tour and would recommend it (even though it is rather pricey). It was a great experience.
For us the organisation worked well. As promised we received the details about our driver the day before via email and our driver Raja was very on time to pick us up. He was very friendly, explained a lot but also let us sleep when we were tired. The ride to and back from the park is 3,5 to 4 hours but it didn't feel bad.
At the park we had Amal as our guide, who was also very friendly and explained so many things to us about the nature in the park and living of the indigenous people. He is a really good guide.
We started with a short hike in the jungle to Teresek Hill (2,5km), then canopy walk and lunch at a floating restaurant. I didn't think the hike is too tough and quite often there are planks to walk on. But it's still humid and steep, so it was still a bit exhausting.
If you want to go with kids you might have to do less walking depending on their age and you should be sure they will really like the canopy walk. We had a couple of kids in front of us who were quite afraid, so it took them a while.
After lunch we first went to a small village of the local indigenous people who explained how to use a blow pipe and start fire. Then we went on the rapid shooting boat trip. You basically go with a boat on a river with some rapids, so it is a bumpy ride with water splashing into the boat. It was great fun and we really enjoyed it after the day in the heat. But we also got completely soaked, so I was happy we brought some clothes to change. We kept our valuable and shoes in a plastic bag, so you only need a towel and new clothes. I was surprised this is not mentioned in the tour description and would recommend Klook to add this.
Also, even though we left at 5.30 and returned around 20.00 there is only lunch planned. Our driver offered to stop along the way at McDonalds but there is no real breakfast or dinner planned. So I also recommend to bring some snacks for this.