Walaby: You ask "What would I have the park do?" What I would have them do is simple. The owner of the park has a great deal to say about what goes on in his/her park. They have rules and regulations for the recreation areas (pools, etc), how late at night noise can go on, when you can and can't use facilities and on and on. These are not places where people can do anything they want. This guy's diagnosis came from him. I have worked my entire life where confidentiality was primary. All the owner has to do is say that a resident has Covid, please use your common sense. This is not exposing the person, but it is giving residents a 'heads-up'. So, that's what I'd have the park do. Nothing complicated or intrusive. Something that reminds people to think safety for themselves and others. And a reminder to the guy to think safety as well.