The actual light show overhead is not very entertaining. I did miss the beginning. I figured it wouldn't matter, but I was slightly confused. It kept showing scenic environments, and after a few minutes, some man-made device would come and disturb the peace and cause birds and animals to fly/run away. I thought it was a political piece about the environment or something, but it ended with a rocket blasting off into space so I don't know what they were going for.
Other than that, it's a lot of fun walking around. Everything is enclosed, and there are lots of great lights and signs from the old casinos. There's usually a free show outside and people handing out free gifts. The casinos are smaller (which means you get your free drinks a lot sooner) and they have much better odds. I was actually able to win some money here.