Visiting family with the vaccine

flowerkid

My dad (in his late 80's)is visiting after a year! To come here, he will be getting on a plane. He is fully vaccinated. My husband and I have had our first. Three teens of course have not been vaccinated. I am on tamoxifen but my last chemo was in Nov 2020. I am trying to decide if we still wear masks in the house with my father. My inclination is yes , but many people including family don't think it's necessary.

Opinions? What have people done in their homes?