Here's a tip, I WISH some one had told me our first Disney trip.... Don't pack everything you read! Seriously.
about 2 months before our Disney vacation I would pick up 1 or 2 items at a time every time I was shopping. I had a wicker laundry basket half full,of little things! From flashlights, ponchos, pieces of table clothes ( I cut them in squares and used them to sit on during parades) every type of medicine that you could possibly imagine. You name it, we had it! I packed and brought all the stuff along. Very neatly organized in ziplock bags. The problem? We used about 5 things that I packed. Once we did the trip, I can really imagine needing some of what we brought. If you do, there's always first aid stations and stores!
What you need, and what are staples that I always bring now? Band aids, Neosporin, Tylenol, mole skins, sunscreen, spare zip lock baggies, ponchos, little tiny flashlight, pepto bismol tablets, and Dramamine. I also carried our penny pressing tube every day along with some other personal items too.
Of course, every one is different! But, not only did this stuff take up space on luggage and in my backpack or tote, but it's extra weight too to lug around all day. Just some friendly advice from someone who learned what you REALLY need, and what you DON'T.