I saw a SpaceX launch. I believe I was in Hollywood studios, but it may have been another park. It was not Magic Kingdom. It was a daytime launch. Even though I didn't know there was a launch that day, it was clearly a rocket launch. It looked like a really strong plane contrail. There was no sound. It was neat, but at that distance it isn't a huge deal. Fortunately, the contrail did not suddenly split in 5 directions with a boom!