I cut and pasted something I found on a simple google search (see below) but honestly, six days? You'll have plenty of time. We have taken the kids to Disney twice, once at ages 4, 7 and 9, and again at 10, 13 and 15. We spent two full days days in both Disneyland and California Adventure and it was PLENTY, like 8 am to midnight with a couple of two hour breaks in the hotel room on each day. I seriously doubt you'll be walking 12 miles a day, unless you plan to do everything three times over.
Here's the info:
Diane-DIO/MPT Agent
04/17/2013 05:14 pm
Disneyland resorts provide guest assistance cards to visitors with disabilities that aren't immediately apparent. Guests who, for whatever reason, cannot be in crowds or stand in line get access to the same handicapped waiting areas that people with wheelchairs or canes use automatically. A guest assistance card usually does not get you to the front of the line; rather, it provides you with a comfortable place to wait.
Visit your doctor and have her write a note before you go. The letter should state the condition, along with why special accommodations are required. This last part is very important, as Disneyland issues guest assistance cards based on the needs of the guest rather than the diagnosis.
Go directly to Guest Relations on the first day of your visit and talk to a Guest Services Cast Member. You can find these near the entrance of every Disney Resort park.
Ask for a guest assistance card and show your doctor's note. Be specific about the condition of you or your child, and outline what your needs are. For instance, if you are dealing with an illness that will not allow you to stand in the sun, say that.
Be diplomatic but persistent. If the Cast Member decides that your issue is endurance related, she may request that you rent a wheelchair. If you feel otherwise, ask to speak to her manager.
Show your guest assistance pass to any Cast Member at attractions where you need assistance. They will be able to read the instructions stamped on the card and give you the accommodations you need.