We did this hike with our family of 5 and another family. Definitely rent the proper shoes, and a walking stick from one of the outfitters near the entrance to the park. We rented from Zion Adventures and they were great. We saw a few people hobbling around injured from wearing flip flops or tennis shoes. The bottom is extremely rocky and you will bump into rocks under the water. Go early! We were there by 830 and the shuttle and one other small group with them. We didn't see anyone for the first hour. It was a little chilly, but warmed up quickly. We turned around, probably a little too late, right after Orderville Canyon. By then our youngest hikers (age 9) and myself (iffy knee) were tired. As we returned the entrance, it was clearly rush hour and very crowded. We were very happy we had an early start. That last mile walk on the paved walkway to the shuttle stop seems much longer after hiking all that way. The scenery was fantastic: shear red walls, waterfalls, little rapids, caves and holes the kids could scramble on and in. My oldest swam whenever possible. Every one one of us loved this hike! Watch the weather report and do not go if they are expecting rain. We were back by 3:00. This in the one hike that I feel must be done if visiting Zion.