The lines for this ride is generally a walk on. However, beware of certain times you will wait for a while.
1) At lunch when people go to Downtown Disney for food and back to the hotels.
2) At dusk when kids go to the hotel rooms
3) After major shows like the fireworks or Fantasmic.
4) Park Closing
The best experience is riding up front in the cab with the driver. Enjoy your trip on the "Highway in the Sky!"
Usually, they run two out of the three trains, although three might be run on extremely busy days. All trains now run at full capacity, so wait times have decreased.
Disabled Guests: While the queue is now a cement ramp, you may chose to use the elevator. Ask a Cast Member for assistance.
Walt Disney World
Tokyo Disney Resort