These things are nice to know. I have had a booster, but by that time another one may or may not be required. Who knows what the future holds.

What do people do for travel insurance? (which applies to health, car, Covid, etc) a comprehensive one, I guess?

I think the rental car is going to be the problem. I don't want to spend an arm and a leg on a car that will be used minimally, but still be used daily. Any suggestions?
Thanks again.