We didn't do the zipline, only the rafting (1/2 Brown canyon). Water was very high due to high snow level this year so our original rafting trip to the numbers was cancelled. We were promptly notified and offered a refund or another tour. We opted for another tour. There was great communication and the staff at the office were very helpful. I HIGHLY recommend a full long sleeve wet suit with neoprene gloves and socks (they sell the gloves and socks). They provide a sleeveless wetsuit for free. I put that one on over my own. I hate being cold. Make sure you have a sun glass strap (which they also sell) that is securely attached. I lost a $200 pair of sunglasses TOTALLY my fault. I had a strap, but it came off (or I may have yanked it off when we turned over). The water was running Level 3 and 4 when we were there. We had three boats with about 8 people per boat, including the guides. 2 of the three boats flipped over during one of the level 4s. I tell you this because you need to pay attention during the safety presentation. The threat of death is real. Nobody died and nobody had to get medical treatment, but water is can be dangerous and you need to know what to do in case you fall out of the boat (or get trapped under it). IT CAN HAPPEN TO YOU! I am glad I had the experience of rafting despite the turn over. Of note, there was nothing that the guide could have done to prevent it. Water is unpredictable. I would HIGHLY recommend this organization. Happy Travels - Misty & Mark