Just got back from our trip, 7/2-7/10 and we did the singalong. Had a blast. What they told us was to call 5 days prior to find out he times. It varies. the singalong started for us at 8:00 and the movie was a 8:40, but it gets darker earlier in September so you'll need to check. You can walk from the WL...we have before. It's tons of fun! There's a great CM there, her name is Sundee. She sings and leads the crowd before the movie. I have to have Sundee or I just won't go.
PamNC