the guides are knowledgeable, swift to act at dangerous times, encouraging and un-intimidating (as some guides can be the opposite of). the course started off super easy and lets just say by the end of the difficult 4 course, i couldn't make a fist to thumbs up if my life depended on it, and i thought i was in pretty good shape. it's a well rounded course, you'll be sure to get your exercise that day (as i thought otherwise). be sure to buy a water ticket, you'll need it while up there! its best to start early in the morning as waiting does become bothersome at times and rsvp to ensure your spot than chance-it as a walk in. weekends are super busy with all the children that come in. forewarning- stretch before and after.