Love it, love it! I love the cheerfulness of it, I love all the tiny kids watching it from the boats, I never resent the song playing permanently in the back of my mind. (Honestly, that song is surely the king of earworms.)
I started a happy tradition some years ago when I convinced my best friend to join me at WDW, and as I was buying a last something along Main Street USA, she saw a weensy girl, no older than 2 1/2, skipping along and singing the highlights of IASW. She just melted -- cute!!