***This was my first time using this tram even though I've walked to and from Mandalay Bay several times; it is a great (and free) service since Mandalay Bay is pretty far from many of The Strip's main attractions; the ride is comfortable; it might not save you that much time since it is a short trip, but if it is cold or hot on The Strip, it is a very handy service***
Entrance to the Mandalay Bay tram is near the Mandalay Bay parking structure, which is free.