If entering PR from the US, you were required to either have proof of your vaccination, or show proof of a negative COVID test within I think like 72 hours before arrival...or subject yourself to one right there in the airport. If you were international arriving in PR, you were required to do a negative COVID test regardless of vaccination or not. They had a very simple website set up for you to enter all of your COVID and travel data. You received a QR code. You showed this code at the airport and no problem. They did contact you daily and you needed to answer whether you were symptomatic or not. They were very persistent about this. During the week we were there, masks were required in all public places, even outdoors. You were allowed to remove them inside restaurants, beach, outdoor activities. I believe a farm owner has every right to require or not require vaccinations and/or masks to be worn. After all, the farms were not open to the public, but by private invitation only. We all supported the decision. No one had to show proof of their vaccination to any farm owner. We've all known each other for many years and our word was plenty good enough.