Hi there, Allie!
The dates for
Mickey's Not-So-Scary Halloween Party are typically announced in mid- to late April, with tickets going on sale in the area of May 1. However, a clue to party nights: if you visit the
Magic Kingdom online calendar for September and October of 2012 and look at the nights on which
the Park closes at 7:00 PM -- that's usually a Halloween party!
A great source for up-to-the-minute information (like release dates) is the
Disney Parks Blog. You can check it daily, and have a version emailed right to your Inbox.
The
Tomorrowland Terrace Fireworks Dessert Party, unlike many of its counterparts, can be reserved 60 days in advance, according to the good folks at (407) WDW-DINE. You can make your reservations two months out by calling Disney Dining, or by
booking online.
Have a great trip!
See you later, celebrator,
-Deborah B.