Saw a great article that I bookmarked for our last trip:
20 things to pack for a day at Walt Disney World
1. Autograph Book - Pack an autograph book, they are great for your children (or yourself) to get signatures from all their favourite Walt Disney World Characters. Make sure to also pack a fat pen or marker so that the
characters with slightly bigger hands than usual have no problem signing their John Hancock. Many people make their own autograph books , but Walt Disney World does sell autograph books, starting at $6.95.
2. Camcorder - A camcorder is a great thing to pack for those who want to capture all the "Magical" moments of Walt Disney World, meeting Disney characters, going on rides, and parades.
3. Camera - A great resource for capture pictures of you with your favourite characters, Walt Disney World monuments, the beautiful scenery, etc. Whether is digital, film or disposable, a camera should be on everyones list to pack.
4. Key to the World Card - For those that are staying at Walt Disney World's Resorts, this card is your room key, your charge card, your theme park tickets, etc. As the most essential tool at Walt Disney World, do not forget to pack this.
5. Cash - While almost everything throughout Walt Disney World will take credit, debit or your room charge card, some of the kiosks with the light up toys do not. It is always a good idea to pack a little change purse with money in case of an emergency (i.e. need a taxi, need to make a phone call on public phone, tip money, etc)
6. Fan/Mister - This is essential to pack for all you theme park warriors that are heading to the world from June - September and wading through the massive crowds in the Florida humidity (not trying to scare you, hehehe). Mister fans can be found at Walmart or at any of the Walt Disney World theme parks. For other great ideas on how to stay cool at Walt Disney World take a look here.
7. First Aid Kit - While there are first-aid stations throughout Walt Disney World, it is always useful to pack a small first aid kit of band-aids, wipes, gauze, etc., in case your child has a small fall when they are waiting in line, or sitting and waiting for the parade.
8. Gum - You will not find gum at any of the Walt Disney World theme parks or resorts. People have even reported having trouble finding gum at MCO. If you are an avid gum chewer, make sure that you pack a couple packs of gums with you.
9. Hat - Nothing like spending a beautiful day at the theme park and have to head back to your Walt Disney World Resort because you have a sun stroke. Plus they help frizzed-out-hair confined in the hot Florida summer weather. No matter what time of year, it is a good idea to pack a hat.
10. Jacket/Poncho - Orlando is notorious for afternoon showers, it is absolutely mandatory to pack a pancho when visiting the Walt Disney World theme parks, unless you want to walk around in high humidity with wet clothes on...ICK. Walt Disney World does sell ponchos, but they are quite pricey.
11. Maps - You can make custom Walt Disney World maps at the Disney website to pack in your bag, or can find maps at any of the park entrances or resort front desks. Great for finding your way through the parks....you may feel silly pulling out a map throughout the day, but you will save time being able to find everything and maximize your time.
12. List of ADRs, things you want to do throughout the day - Always a good idea to pack a list of your Advanced Dining Reservations for the Walt Disney World restaurants with the confirmation numbers just in case. While most people have no problems, people have reported through the Disney forums that their reservation was lost. If you have the confirmation number you should have no problems verifying. If you pack a list of things that you want to do at Walt Disney World it will also help you keep track of everything you hope to get out of your vacation and will help you keep on track throughout the day.
13. Memory Card for your Digital Camera - There are so many different attractions, people/characters to see, beautiful and curious sites that it is very easy to zip through all the pictures on your memory card. Walt Disney World does sell Memory Cards at each of the parks, but at a very high price. Make sure that you pack an extra card just in case.
14. Pen - Pack one, you never know when you are going to have to jot something down!
15. Pins - This is for all you avid Pin Collectors at Walt Disney World. Many people decorate lanyards, backpacks, with the pins, and use them throughout the parks for trading with other Pin Collecters. If you are interested in starting a pin collection before you arrive at Walt Disney World, you can find pins on (had to delete URLS) Make sure to pack your pins for trading!
16. Socks - I made this mistake once and only once. With the afternoon showers, wet rides and the random spitting character from up above, it is a must to pack an extra pair of socks to bring to the Walt Disney World theme parks. It will save your feet from awful chafing and blisters!
17. Snacks - Pack some snacks, they always always come in handy when waiting for parades/shows to start at Walt Disney World and help cut down on the costly splurge of funnel cakes, ice creams, brownies...mmm....for some of the yummy treats that Walt Disney World offers, that you need to bring a snack to avoid
take a look here
18. Quarters and Pennies - There are quite a few people who like to collect the pressed pennies throughout Walt Disney World Resorts and Parks. It is actually a great activity to do with your children and can cut down on the cost of money that they rope you in to spending on your next vacation. Pressed penny machines are scattered across the parks, and for the cost of two quarters, you can press your pennies into an assortment of designs. You are able to find a list of the different designs, including the limited edition pressed pennies here Make sure you pack your pennies and quarters! (Tip pack them in an empty M&Ms container)
19. Sunscreen - In today's world, sunscreen should be a given when you are outside. Remember to pack it and reapply every few hours, or after you go on wet rides or after a downpour. Sunburns won't be much fun when you go on a ride at Walt Disney World that has a restraint that pulls over the sunburnt areas. Ouch!
20. Water - I always order a case or two of water to my Walt Disney World Resort. We always get the
Disney Dining Plan, but I am against spending that much money on a bottle of water, and would rather have some yummy treats instead. If you plan to pack water for the parks, it might be a good idea to stick it in the freezer the night before you head to the park (for those that are lucky enough to have a fridge in your room), allowing you to have your water ice cold for a little longer while at the park. If you forget or run out of water, the counter service restaurants at Walt Disney World will give you a cup of ice tap water for free (bring some Crystal Light to help with taste for strictly bottle water drinkers).
Hope that helps!
If I don't take something I'll end up needing it (Murphy's Law) so I bring:
. I was told we were "cheating" one night because "part of the experience" is suffering while waiting for the bus 
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