This thread seems to be confusing entry into STT and entry into BVI.

It's also important to realize that the rules for entry into STT differ depending on whether your travel is domestic (i.e., from the "mainland" U.S.) of from a foreign country (i.e., from the BVI).

For fully vaccinated travelers . .

Entry to STT from "mainland" U.S. - Test within 5 days of travel
Entry to BVI (as of this week) - Test within 48 hours of travel
Re-entry to STT from BVI - Test within 5 days if traveling by boat, test within 3 days if traveling by air.