Hi Glenda,
You are going to love
Mickey's Not-So-Scary Halloween Party! It is my favorite special event at the Magic Kingdom!
The Happy HalloWishes fireworks are scheduled for 9:30 p.m. Mickey's "Boo-to-You" Halloween Parade is awesome & is scheduled for 8:15 p.m. & 10:30 p.m. If the members of your party are able to stay out later, skip the 1st parade & hit the attractions which will be less crowded. Its easier to get a good spot for the 2nd parade.
Here are a few other fun details. Everyone (including adults) is encouraged to dress up - there are some super creative costumes. You'll be boarding rides so you don't want a costume to be bulky & cumbersome. Be sure you wear comfortable footwear.
MK will be decked out in Halloween decorations. When you enter, be sure to pick up a Guide Map for MNSSHP. You'll each be given a Trick-or-Treat bag (you can bring your own). There will be several locations throughout the park where you can T-o-T (locations will be marked on your Guide Map).
There will be several character M&G locations around the park. The characters dress up for Halloween too! PhotoPass Photographers will be located at the M&Gs as well as throughout the park. Not every attraction is open during MNSSHP - but the most popular ones will be - check the Guide Map for a list.
I haven't seen a complete list of events for the 2010 MNSSHP, but last year there were a couple of character dance party locations & a Disney Villains Mix & Mingle in front of Cinderella Castle. Alice & Mad Hatter's Treat Party was along the back path b/t Toontown & Tomorrowland. These will be listed on the Guide Maps.
Wishing you many magical spooktacular memories :-) Allison