Personally, I went to the park more "quiet" park where wearing a lifejacket is mandatory when in the water. The place is nice because there is a large area of ??water to swim and dive and the zippeline is funny even if a little pushy on the last meters of the way back. There are a lot more people in the afternoon but very little in the morning. Most visitors are foreign tourists. The small problem, but logical view the topography of the place is that there is almost no shade when you are in or on the water. Except a small corridor along the natural rock wall.
If you have time and are transported, I advise you to go after to Phufinn Doi & Terrace coffee shop for a snack, a little further on the hill. The view is beautiful and cakes and ice creams very good (85 to 165 THB).
Open from 9 am to 6pm.
Entrance: THB 100 per person.
For this price, you will get a lifejacket and an umbrella if the sun hits hard.
Zippeline: 300 THB for a round trip
Locker rental: 30 THB
Grand Canyon Water Park
Admission: 350 THB per adult and 300 THB per child.
Rental of a locker: 50 THB
To come, by car and scooter it takes around 40 minutes depending on the traffic. Otehrwise you can ask a red car to bring you there. To go back ask the reception of the 2 parks, they will a red car for you. There are many of them waiting in the street outside. Count around 600 THB.