I booked this immediately after reading about it earlier in the morning. (Party of two on Sept 9). I waited on hold for 50 minutes, but was able to get the earlier dessert party of the night, which made it worth it.
I understand the people that are upset about the pricing. We're actually doing three dessert parties this trip (there's only two of us and splurging feels excused because it's our honeymoon
), but this was by far the most expensive. This is what made it worth it for me:
1) Eating inside the castle. When we were deciding restaurants way back at our 180 mark, I seriously considered CRT but decided against it because a. We don't really care about princesses, b. The food was supposed to be mediocre, and c. It was 2 dining credits. We opted for a character breakfast at Crystal Palace for 1 instead, but I still wanted the experience of eating in the castle. Now we'll get that.
2) I love desserts. Unlimited desserts is pretty much my idea of heaven.
3) Disney Villains without lines. We like characters, but not enough to wait around for them. We'd rather go on rides if we're going to wait more than 15 minutes. And villains are my favorite, especially some of the ones that are supposed to be at the event (Lady Tremaine, Frollo, and Captain Hook).
4) We normally go to
Disneyland, and don't know the next time we'll be returning to Disney World. This is also DH's first time EVER at WDW. And it's our honeymoon. So all the special occasion, splurging, when-will-we-back? justification made it easier to overlook the extra cost.
5) Priority seating. We HATE crowds. We're going in September because it has the least crowds. We like the parades and fireworks, but might have skipped the parade (or had a really really obstructed view) if not for this. And I really wanted to see the parade, especially the Headless Horseman. Yes, you can see it with regular admission. But for us, and the way we tour, we might not have.
6) There's only two of us. If we were a family of four, I don't know if I'd be able to justify the price. I mean, $400 is a lot for a family to pay for the novelty of hearing Lady Tremaine sing. (You could see a *real* superstar sing for that price.) Also, I seriously doubt most kids will know the difference between the dessert party and the Halloween party at large. For that kind of money, you'd be better off upgrading to a suite at your hotel of choice for the night. Or having your own personal dessert party every night of the trip. Kids would go crazy over that.
But for us, in a dual income no kids household, the pros outweigh the price point. We're the perfect demographic for this kind of thing, and I personally can't wait for the soiree. It's going to be one of the highlights in an already jam-packed trip.
... Although it is not our honeymoon... But, this is exactly us (we are doing the three dessert parties as well!)... I must say... I am interested to see if any of these live up to the Fantasmic Dessert package at Disneyland...
Hope that doesn't sound bad! 
