I hope you all have a great time. We did this last year but will just miss it this year.
Don't worry if you don't get loads of sweets inside the park as you leave just outside the main gates you will see 2 large inflatable pumpkins (you wll notice them on arrival). On the way out they are manned and you just go up with your bag or pumpkin (these can also be bought on the way in by the monorail station filled with a few sweets for $8 and they have Mickey ears on them) and the CM's will liteally put hands full of sweets in them.
The parade is not to be missed