Excellent afternoon with guides Jacob, Riley and Heath. I am 71 and had no problem with anything, although I did find holding a cannonball position for a long run was a bit strenuous. Certainly not enough to prevent me from doing this again in the future. Just a suggestion, but if you are an older person, you may want to consider the 4 zipline package, which is what we got. The folks who had the longer package had a bit more rigorous hike to one of the ziplines.
Overall, it was very much worth the time and effort, and we especially appreciate the help and concern for our safety and comfort by the guides. If we go again, we'll hope to get Jacob, Riely, and Heath.