Previous responses covered most items I was going to mention.

Two things I do not think were mentioned:
1. create an account on Mayo's patient portal if you have not, you can look at all your appointments, check in ahead of time, see test results and provider notes.

Two way to access
1. from computer: https://onlineservices.mayoclinic.org/content/staticpatient/showpage/patientonline
2. If have smart phone, download Mayo app.

MN in Oct is beautiful, hope your visit goes well.

Laurie