@bria, I might start with contacting the Concierge Services at Mayo Clinic.
It's a free service and they answer all sorts of questions regarding your time at Mayo Clinic, like where to get a wagon and activities you can do. See all the ways you can contact them here: https://www.mayoclinic.org/patient-visitor-guide/minnesota/concierge-services

I'm also bringing in @mitzi3 @alexisdewilde and @ihatediabetes into this discussion. I bet they will have more ideas.
Also see these related discussions that have some tips that may be useful for you:
- How do I convince my child with autism to wear a face mask? https://connect.mayoclinic.org/discussion/face-masks/
- Preparing for medical appointment with a teen with autism and anxiety https://connect.mayoclinic.org/discussion/looking-for-tips-for-attending-with-a-teen-with-autism-and-anxiety/

Bria, will you be in Rochester for a few days?