Hi, I am going to be frequently flying to/from ORD escorting an elderly intellectually disabled family member. Any ideas or tips in terms of crowded places to avoid, shortcuts, quiet places, etc. would be greatly appreciated!

Additional Info:
- She can walk independently but veryyy slowly and does not seem willing to use the airline wheelchairs. She would be fine on one of those golf cart type transport things but AA said they don’t have them at ORD.
- Booked on American for our next few flights but am open to any.
- Lounges would be great particularly for bathrooms. I have an amex plat card, AA citi world exec, and am star alliance gold (not through United, so lounge access if flying United I think).
- We will have PLENTY of time when departing from ORD. Like if T5 is quiet and easy to go through security and has a nice lounge we can sit in for 2 hours and then have an easy way to get to T3 then that would be preferable over any sort of mayhem.
- Flights are and will all be domestic and direct.
- Can also fly in or out of nearby airports (MKE, MDW, etc) in the future.
- She will be dropped off/picked up at the curb by a caregiver, so no parking or anything.


Really appreciate any advice! And sorry if this is the wrong place to ask!