My parents are 80, currently in good health, but definitely at high risk if they caught COVID. They're well-off and like to go out and spend money. Any kind of

My parents are 80, currently in good health, but definitely at high risk if they caught COVID. They're well-off and like to go out and spend money. Any kind of "focused protection" strategy means they have to stop going out and their spending will plummet. They're not alone; I believe "healthy affluent Baby Boomers" is actually a pretty large group of people in Western countries. Fortunately we live in New Zealand so they can (and do) continue to go out and spend money without fear.