1. Open the door at 8 am, we entered the park at 8:30, it was very cold, climbing the mountain for a while and it was hot, but it was cold through the bottom of the canyon. 2. Our family of three, my son is 5 years old, did not choose in-depth tour, choose the whole journey hiking (taking route 3), stop and take pictures, the whole journey takes 2.5 hours. If the child is too young to go down to the bottom of the canyon, it is still a bit tired. It is just right at 5 years old, and basically you can go down the steep ladder. 3. This is a treasure attraction. I really like it. I still shock me through the bottom of the Grand Canyon. The scenery is good and the service is good. 4. The scenic spot is very clean, there are many trash cans, and the toilets are clean.