Advice:
- get a map when you walk in, it's a special map that shows party locations for trick or treating, characters, special merchandise and special holiday party only snacks you can purchase. (and the time table for when everything is happening). They only give 1 per family so if you need more, just keep asking other cms near trick or treating and they will get you another.
- if your doing the allergy trick or treating, you just ask the cm at the start of the line for the token so if nobody is getting candy there is no reason to get in line, you'll just be sent back to the first cm to get the token.
- if your doing the allergy trick or treating, in the bypass where you get your first bag and set of candy tell them you want the allergy option. It's a blue bag and you'll collect tokens and redeem them at the end from a choice of 10 different items with different allergy restrictions (including non-food items).
- If your a parent and you aren't going to get candy, get the allergy bag, the treats are basically gummi candies, hard candy, cookies, and the non-food is low cost ornaments. aka, snacks for the rest of the trip and way home. they are prepackaged. doesn't take long to redeem it. you get the same amount with 1 token and 100 tokens so don't go too crazy if someone runs out of tokens, you only need one. They basically point to the sheet and say, what can or can't you have and load up your bag.
- Disney cannot reuse candy they took out of the big bag. At the very end of the night, if you time it to be one of the last people to leave they will literally hand you as much candy as you'll take when you are about to pass the security stands. they throw it out for saftey reasons if any is left. (the big bags before they open them they can tell if they were tampered with, individual candy who know so they play it 1000% safe in this area).
- There is special popcorn buckets and drink cups for sale if that interests you. Popcorn buckets are at most popcorn stands, they are vampire mickey and zero in his dog house (dog from nightmare before xmas). The cup which tends to be at the stores selling the special holiday party treats is a poison apple (apple covered in a skull).
zip lock bags and backpack will help you carry extra candy, especially on a ride. if you really do trick or treating, 3-6 bags full of candy per person is not unreasonable. Also keeping the bag a little empty will help get more as they see your not near full, especially if little and having trouble carrying it.
And last.. Check the hourly forecast before you run over for it. A long ride line with a roof over your head is a good way to escape the rain in costume and knowing roughly when that might happen you can plan where you want to be or what show/parade you might want to catch.. Rain sucks, rain in a costume is worse. Might I recommend haunted mansion as being halloweenish, will generally have a good line +ride that takes abotu the time of the average florida storm to do.