It's neat to see tomorrowland from the TTA. And going through the rides is cool too. You can even get a glimpse of a parade.
This will always be my favorite ride, I honestly am not sure why. It's just a good old fashion good time. From the crazy inclined people mover walkway to looking at the Magic Kingdom from different ways. In my early years I used to be afraid every time it went into Space Mountain, for fear that I would suddenly be on a roller coaster! It's almost like a little behind the scene's breezy and relaxing tour. I miss the old narrative, and name of course. Good at nighttime too, when youngsters are getting tired by still want to do something.
This is the most relaxing ride you will find anywhere on Disney property imo. Not only is it shaded the whole way, but you have many things to look at. From the castle to the inside of space mountain it is a must do. The next time you need a break from the crowds in MK head to the TTA and hop aboard the metroliner.
I read one on here about how they let you stay on, and it's happened to me too. In the florida (aka rainy) summer, we happened to go on it right before it started to rain. The cast members let us stay on at least for 23 rides. For some odd reason (I must have gotten attached to the ride, and I love Walt's original idea for EPCOT center) I wanted it to rain on this wednesday (I went to the parks from Mon. to Wed.). Alas, no rain, but I still got on...