I just returned from 3 weeks in USVi and we basically remained self quarantined on our boat. The few ventures to grocery stores were with mask and hand sanitizer and social distancing.

First step would be owners and their guest accompanying them to responsibly follow the established procedures(More vested interest for successful procedure than charter guests alone).. Then hopefully charter guests.

I do believe land owners/Villa owners likewise would be vested in successful procedure being established. (Although villa owners are not in the same boat, we certainly are all in the same storm.)