We just got back from a trip to the BVI. We flew from the states to St Thomas and took the ferry over to Road Town. Currently, do to low demand there is only one daily ferry at 4 pm going to Road Town and a 9 am ferry going from Road Town to St Thomas. We needed a negative test (providing you are fully vaccinated) to enter both St Thomas and the BVI, at arrive into BVI, you get a rapid test, 15 minutes later, with a negative result free to go anywhere. Prior to leaving BVI back to St Thomas, you need another test. Overall it wasn't too bad. One observation. since charters in USVI are not going to BVI, the anchorages' are all really crowded in USVI. We enjoyed total access to all the BVI almost totally alone.
I don't see it getting easy to sail between BVI and USVI anytime soon. So it's one or the other. Our Leopard is in the BVI so for now we are still content there. Hopefully sometime soon we can come and go again from BVI to USVI.