Our two zipline guides, Emily and Olivia, were amazing! They were patient and knew when they needed to firmly give someone like me some "extra motivation" to launch! I have a bit of fear of heights but Emily and Olivia put me at ease. By the end of the 7 zipline course, I was a lot more fearless because I knew they put safety FIRST and made it all fun! My wife and I even raced on the final dual zipline and, of course, my wife won! We highly recommend the Denali Park Zipline Adventure!