I haven't read it all, so I apologize for repeats.
We went over NYE. Twin DS7 and DS2.5 at the time.
We packed a stroller. In the basket we kept ponchos and a bag with snacks for ds2, dh and I., plus water bottles. We wore jackets and stuck them in the stroller when it got warmer later in the day. We all wore hats. I carried a lightweight cross body bag (Vera Bradley hipster) with ids, credit card, phone, WDW tickets, mini sunscreen, Chapstick, sunglasses, epipen, and band aides.
The twins each had a lightweight backpack like this (
http://www.dickssportinggoods.com/p...d=18665806&cp=4406646.4413887.4414035.4414033) and they carried their own water bottle and snacks.
We had extra clothes for the kids, and I washed a large load of laundry about 2/3 through the trip. Bring quarters.
Two pairs shoes each.
Swimsuits.
All possible medicines we might need, including children's Benadryl and Advil. First aide kit.
Travel sewing kit.
We packed a bottle of vodka and dh and I would buy juice and enjoy a drink after the kids went to bed. Hehehe
More pull-ups and wipes than you think you'll need.
Pop up laundry basket.
Hanging fabric shelf thing (like a shoe rack but bigger) to sort out outfits.
Travel electronics, chargers, power strip.