Well, my timing seems to have been spot on. 🙂 If you scroll to the bottom of this long page about thyroid cancer from Mayo Clinic, you'll see a helpful list of questions to ask as you prepare for your appointment https://www.mayoclinic.org/diseases-conditions/thyroid-cancer/diagnosis-treatment/drc-20354167

These ones seem to be particularly relevant to your situation and I added a few of my own:
Will I need further treatment?
How can two different types of thyroid cancer be treated effectively?
What are my options?
What are the benefits and risks of each treatment option?
I have other health problems. How can I best manage them together?
Will I be able to work and do my usual activities during thyroid cancer treatment?
Should I seek a second opinion?
Should I see a doctor who specializes in thyroid diseases?
How quickly do I need to make a decision about thyroid cancer treatment? Can I take some time to consider my options?
What might happen if I decide to have regular checkups but not have cancer treatment?

I'll be thinking about you on Monday and will be interested to hear what you learn?