Hi Diane ~
Your trip is just around the corner and I bet you're too excited to sleep already!
If the attraction loads and unloads in the same place, Cast Members (CMs) will move your Mother's wheelchair just to the side while she is on the attraction. If the unloading area is different, CMs will move it to the unloading area and it will be waiting for her at the end of the attraction.
Since mobility will be an issue, keep in mind that there are some attractions that board from a moving sidewalk. On some attractions with moving sidewalks, CMs are able to slow them down or stop them in order to give Guests additional time to board. Most CMs are good at recognizing needs and will ask but if they don't be sure to mention it to them. Peter Pan is not one of those attractions. They told me they can't slow it down and can't stop it so Guests must be able to board without them slowing it down.
Here is some
information regarding attractions for Guests with Mobility Disabilities including those that allow Guests to remain in their wheelchairs or ECVs, those that require Guests in ECVs to transfer to wheelchairs to board and those that require Guests to be mobile to enjoy.
Most of the queues at Disney are now mainstreamed to accommodate Guests traveling in wheelchairs or EVCs. If there are queues that require Guests in wheelchairs to enter through alternate queues, you can see a Cast Member for assistance. Depending on the wait time, they may give you a return time to come back to the attraction based on the current wait time. There aren't many of these and most of them are found at Magic Kingdom like the Tomorrowland Speedway.
Please feel free to visit us with all of your last minute planning questions. We'll be hEAR for you up until you embark on your pixie dusted trail!
Wishing you minnie magical memories :-) Allison V.