Hi Janet! Thanks for visiting planDisney.
Disneyland Resort is committing to providing a welcoming and inclusive experience for all its Guests. I've visited with family members who required accommodations due to their disabilities, and I can report that we all enjoyed our visit and found Disneyland Resort to be a very accessible destination and responsive to our needs.
Guests who can't tolerate extended waits in queues can apply for the
Disability Access Service (DAS). This can be done in advance or at the parks. DAS allows Guests to book a return time for an attraction, so they don't have to wait in the queue. Guests with DAS will bring their party with them at their return time, so your son won't be separated from his son if he qualifies for DAS.
However, Guests with disabilities based on the use of a wheelchair don't necessarily need or qualify for DAS. Depending on the attraction, the Guest can use the standard queue in their wheelchair or receive a return time that is comparable to whatever the current standby wait time is for that attraction. If you have concerns about your son's wheelchair use while at the parks, please take a look at this helpful
Mobility Disabilities Guide.
The Attractions page has accessibility filters, which can be useful for planning your visit too. There are a limited number of Attractions that require Guests to be
Ambulatory. Otherwise, Guests can either enjoy the Attraction in their
wheelchair or
transfer from their wheelchair.
I hope this helps!
Elizabeth