I'm so excited for you to visiting Disney soon! If you visit the website www.allearsnet.com and type in "Strollers at WDW" in the search button, you will find a thorough article that includes photographs on the strollers at Walt Disney World (I couldn't find the dimensions, though). You can also visit
here to see more information on the strollers.
You are welcome to send packages to WDW, and it is something we have done numerous times. You can send the package with the following address label:
Disney's (name of your resort)
Street Address (of resort)
City, FL Zip Code
Please hold for Guest (your name here)
Guest Arriving on (arrival date here)
Since you haven't mentioned your resort, I can't give you the specific address, but they can be found by clicking on the specific resort's link
here. When you arrive at the resort to check in, just mention to the cast member that you sent a package to the resort.
Also, if you click here, I provided you with a
link to information about services provided for guests with disabilities. You might also want to consider obtaining a Guest Assistance Card at any of the park's Guest Services which can provide you with any accommodations you might need.
Wishing you a magical trip!