1. Yes. I believe in science. If people aren't wearing masks in close proximity they are usually obnoxious assholes. If you don't at least wear a mask close to someone else, you're disrespectful.
2. I can't advise your kids to do anything. You have the choice to do whatever you want as a parent. I would follow CDC guidance and vaccinate them with Pfizer or Moderna and skip the classic vaccine types. They have been highly effective and haven't caused issues with people. Yes, children are new, but when anyone is eligible, I would follow guidance to get them vaccinated. I'm not a scientist and nether are you, so I follow what I'm told by thousands of doctors around the world. I mean, what else can we do.