I was reading it, and it sounds like it takes up a lot of the night. That's not to say it won't be good for some, but just be aware!
Here's what it says:
- Starting at 7:30 PM, Guests will meet at the parade viewing area located by the flag pole in Town Square to see Mickey’s Once Upon a Christmastime Parade, which begins at 8:35 PM.
- After the parade, Guests will be escorted back to Tomorrowland Terrace Restaurant—the location for both the dessert party and Holiday Wishes: Celebrate the Spirit of the Season fireworks at 10:00 PM.
So it sounds like you get great views of the parade & fireworks, but it'll basically run from 7:30pm - 10:30pm... most of the party!
I'm kind of assuming it is similar to the other events like this we have done where you can check in at 7:30 and get your seat or wait until closer to the parade time and not get as great a seat, but they are still perfectly good seats. And then you can stay for after the fireworks and eat your dessert or just leave, so while the time available is that long, you don't necessarily have to actually spend all that time there. I will definitely be watching for reviews though. We don't go until 12/22, so it will be a crowded night. Anything to cut down on some of the craziness is good by me.