These are small things and should not become big issues. Continue in a normal way with these family members, and let the incidents pass. You shouldn’t hold on to it worrying about what they are thinking, and you shouldn’t hold grudges against them. It’s not worth it. It’ll get forgotten soon enough.
As for holding your tongue, I know how hard it is. I definitely have a hard time with this too. But I think once you’ve said something once, don’t continue in a discussion argument. They have different opinions. Let them have them. Do what you need to do.