Hi Colleen ~
Dropping off Guests, including those with mobility disabilities, at any of the four theme parks at the Walt Disney World Resort is very convenient. Once you reach the parking plaza at the theme park, tell the Cast Member that you are dropping off Guests. For Epcot, Disney's Hollywood Studios, and Disney's Animal Kingdom park, they should direct you towards the regular parking lots where you can tell the next Cast Member that you are dropping off Guests and you will be directed to the drop off location near the front of the park.
For the Magic Kingdom, the drop off location is next to the Transportation and Ticket Center and Disney's Polynesian Village Resort. You should stay in the right lane (not the one designated for buses) as you approach the parking plaza so that you can easily access the road to the drop off location. From there, you will need to take the monorail or the ferryboat to the entrance of the Magic Kingdom.
There are blue courtesy wheelchairs in the handicapped parking areas but they are not always at the Guest drop-off locations. These courtesy wheelchairs are for Guests to use as they go from the handicapped parking areas to the
wheelchair rental locations. If you are dropping off a Guest at a theme park or Disney Springs that will require a wheelchair, I'd bring my own just in case.
Please feel free to visit us again with all of your planning questions. We are hEAR for you!
Wishing you minnie magical memories :-) Allison V.