My family and I saw it on Sunday night last week. The line appeared to be really long, but it moved so fast we hardly noticed it. Others are correct that there are no seats, and you sit on the ground, but they didn't pack us in, so we had enough leg room and were sitting cross-legged comfortably.
There's a "pirate" that comes out and does a introduction, with pirates all around the area.... Then the movie starts. 3-D glasses are provided, and collected at the end.
The movie itself it awesome, and i can't wait to see it. It's just long enough to keep you wanting more. I'm really glad we took the time to see it, as we had seen the TRON preview when it was at DGC, and hoped it was just as good. It was....