Back in June when I went to WDW with my best friends we had breakfast reservations at Crystal Palace for before the park opened:
That night the park was open late and there was a late parade of Spectromagic at I believe 11 and we watched it down by Splash Mountain where it ends so when the parade was over everyone else had already left. We walked through Fantasyland, through the Castle, and down Main Street and there were only about 5 people around. It was amazing:
Its a bit blurry :[
You can't tell but there was no one behind us on Main Street