Because we were locked into vacations during school breaks, we went every summer and we used to go every Christmas between Christmas and New Years. Always spent New Years at MGM (OK, it was MGM as the last time we did this was 2007). We stopped going because it was so crowded. There was so much to do though at MGM that it did't feel that crowded on New Years Eve. Back then there was the Osbourne Lights, table service dining, Fantasmic, and a concert by the Sourcers Hat. Lots of places to diversify the crowds. They had fireworks at midnight, and yes, everyone leaving at once was insane. We always did Christmas at MK and after the fireworks, we waited for there crowds to leave, getting ice cream and just hanging around till it was pretty quiet. IT wasn't just the New Years Eve or Christmas crowds that got to us, it was the entire week of crowds. I don't think I would do it again anytime soon.