I believe the reason why it is closed so much is because it is an older attraction and they don't have the parts to repair it if it should break.
I still remember the original song by Richard and Robert Sherman, who wrote so many of the disney songs.
Now is the time
Now is the best time
Now is the best time of your life
Life is a prize, live every minute
Open your eyes and watch how you win it
Yesterdays memories may sparkle and gleam
Tomorrow is still but a dream
Right here and now you've got it made
The world's forward marching and you're in the parade
Now is the time
Now is the best time
Be it a time of joy or strife
There's so much to cheer for
Be glad you're here for it's the best time of your life.