Look's like that cruise ship out of Barbados had similar testing requirements in place.
1. Test before arrival, 2. test on arrival, 3. test on forth day...
But on the forth day someone tested positive... how you have a real mess.
Has the BVI announced a policy for what happens if you have positive test on the forth day?
Yes. A positive test would require another 10 days of quarantine to get you to the normal 14 days. The way it currently works for residents is you're retested on day 13 and day 14. If both tests are negative you are released from quarantine. And yes, the traveler would be responsible for the cost of quarantine days.
If you're unwell enough to be hospitalized, it's possible your COVID-19 insurance may repatriate you but that's a pretty severe case.
