Someone who has never been to Vegas might understandably roll their eyes at the concept of a tram to take you from one hotel to the hotel right next door. This is to underestimate the magnification factor of almost everything in Vegas, which when combined with 100-degree heat and travel-weary feet, can seem an insurmountable obstacle. Clean, generally reliable, and most importantly FREE, this is a great alternative, especially if you are not on a tight timetable.
Between this tram, the new one that goes through City Center, and the one that loops from Mandalay Bay to the Excalibur - all of which are completely free - I have no idea why anyone would pay to ride the monorail unless they were heading out to the Hilton or Convention Center.