Was also there Saturday, 12/15. They were pulsing the line into Wizarding World, using the left side of Kung Fu Panda as the queue. Man, that was one clusterf*ck. I found that if you stood by the Butterbeer Cart in the back and wait until just before the show started, you can actually get a really good full view of the nighttime light show. Either way, avoid the early showings and try for the later showings.