Hello, Michelle!
Have no fear! Once again, the "Magic of Disney" is ready to have all this information right at your fingertips. You and your family are simply going to LOVE MNSSHP. Let's get started!
Upon entrance, you and your family will be given trick-or-treat bags and a special map for MNSSHP. This map will be your best friend. The trick-or-treat locations will be marked with Goofy's Candy Co. symbol. The majority of these spots can be found in Toontown. Now the character meet & greet will be identified on the map with Mickey's gloved hand. Again, a high concentration is in Toontown and the walkway leading there. Careful, many character meet & greets were not on the map, so be on the lookout. There are a couple of dance parties, so just look for a disco ball in the shape of Mickey's head on your map. The parade usually follows the same parade route for all parades. For MNSSHP, it usually begins in Frontierland, but always check your map. Second parade is less crowded.
My best advice would be to get there early and begin at Toontown and then make your way back. Yes, go against the crowd. Oh, both adults and children are in costumes, so pack your best costume!
Now all the above information is based on past MNSSHP, so there may be changes. Have a magical evening!