Unfortunately, the rapid tests won't help the problem of people being turned away at the ferry and then missing flights. USVI now requires an antibody or PCR test and that system is overwhelmed. They would need to figure out a strategy to prioritize outbound USVI tests or increase capacity so every result is returned in 24 hours.

We're coming to the wrap up of this year's busy season (either naturally or forced) so that may be enough to bring some relief to the testing load.

I ALWAYS recommend flying. That process has been working for a while and there is a lot more redundancy in carriers. My recommendation stands; if you are in the BVI or planning a trip in the next couple of months, change your tickets and fly thru SJU.