If you're staying in any of the WDW resorts (except Swan and Dolphin) you can buy anything in the parks and they will deliver it to the gift shop of your resort by the next afternoon. When you buy your item, just tell them you want it delivered to your resort, they'll have you fill out a yellow carbon copy thing that has your name, home #, resort, and room#, and then give you a copy of it. When you pick up your item they'll have you sign a little book and give you your pkg with another copy of the yellow slip. At POP you oick up pkgs at the counter as you walk in the front door of the gift shop.
As long as you put a credit card on file when you check in you can charge just about anything to your room during your stay (except for a few of the snack carts). The values have a $500.00 limit, the mods, $1000.00 and the deluxes $1500.00. If you are getting close to your limit, just go to the fron desk and either pay it off or authroize them to go ahead and charge your credit card. Then your limit starts over again. If you don't want them to charge your credit card, be sure to go down the night before you check out to pay your balance, as they will charge your card about 2:00am on your checkout day.
With the MYW tickets your room key will also have your park tickets on them. In my case I have an AP, but bought the MYW tickets in order to get the free dining. My son and D-I-L will use their room keys to get into the parks, but I will use my AP (carrying my room key just for charges and to get into EMH).