I took my 12 year old grandson on the 6 line adventure. We had a blast! I am 70, and I was able to do all six with no trouble. The hardest part was the short little hike from line 1 to line 2. It is uphill at 8000 feet, and we live at sea level. They let me go first so that I could get a headstart on the walk. Yikes! I was out of breath. The views were incredible. We rented the GoPro camera that was attached to the helmet, and my grandson got some excellent videos. The guides were terrific, and I felt very safe. My grandson loved it ... he couldn't stop talking about it. Very professional and worth every cent!