My FH and I are getting married in two months, and we live in a state where covid-19 is rapidly increasing. Because we have an outdoor venue and our guest count is <25% capacity and events of such nature are allowed, our wedding has not been canceled/postponed. However, we have decided to ask our guests to wear masks for the ceremony and reception (whenever they aren't eating/drinking), in addition to many other safety precautions recommended by the CDC.
The parents of my FH believe that masks are a political statement rather than a safety precaution, and literally hung up on my FH when he told them on the phone that we had made this decision. We're not comfortable having the wedding without masks (my dad is high risk, among others), but it sounds like his parents might flat out refuse to abide by our request.