Your mom will be in amazing hands at Mayo. Truly, they set the bar very high for medical care and spoil their patients for treatment anywhere else.
I’m biased because I’ve been “Mayo-naised” more than once. LOL

The clinic is very easy to navigate. It looks large and intimidating when you drive up to it. But once inside, there is signage everywhere and volunteers in Blue Jackets helping with directions. Everyone is so friendly and attentive.

It’s really nice that your parents have a camper where they can stay. That would definitely save on hotel costs and be a familiar roost at night. Rochester is super easy to get around but parking can be a challenge near the clinic. So if they do stay in the camper, allow extra time if your mom has an appointment before 9 AM to find a parking spot and arrive to the clinic on time.

Your mom has only 3 appointments scheduled right now. But as she has tests run and meets with doctors they may schedule more appointments.
If she checks with the intake desks where her appointments will be, often there will be a cancellation and her appointments could be moved up and consolidated.

There are lovely lounge areas for resting, lots of bathrooms, and a cafeteria in the clinic and with restaurants and shops attached to the clinic. It’s also in the downtown area with lovely places to walk. Easy to kill time while waiting between appointments instead of driving back and forth to the camper.

However if they (you) have a hotel close to the clinic, most are linked by tunnel to the clinic (called the Subway). They would be able to park at the hotel and then just walk to the clinic and back between visits. That’s what my husband and I do. Super convenient. Or, there are hotels a little further away and most have a shuttle service.

You know your family best. If you feel it would be more advantageous for you to be with your mom at the appointments instead of your stepdad, that would be great. But at some point if your mom does need to be tended for some medical reasons, your stepdad will eventually have to step up to the plate unless you’re prepared to be with your mom during that time. So maybe the best option IS to be at Mayo with both of them. That way he can be part of the process and get information first hand as well.

If I can be of any further help, don’t hesitate to ask. My husband and I had to temporarily set up housekeeping in Rochester for 4+ months while I underwent a bone marrow transplant. The clinic and Rochester are like a second home. ☺️