I did want to add that, although it was crowded, it was also a really neat event to be a part of. We actually felt a bit out of place, since pretty everyone but us had come to the park dressed with Christmas gear. There was definitely a lot of excitement in the air, and I'm glad we got to be a part of it.
Now, having done it one time accidentally, would I recommend it? Sure. It's a great thing to take part in, and it's very unique since it only happens once a year.
Would I want to do it again? No. This year, we'll visit a different park.