I honestly cannot imagine this is actually the case. The DCL website states "If a threshold of COVID-19 is detected on board the cruise ship during a voyage, the voyage will be ended immediately and the ship will return to the U.S. port of embarkation, and your subsequent travel, including your return home, may be restricted or delayed." We may not know the "threshold", but Carnival had 26 crew members test positive on the Vista recently and they were still sailing. If they would turn the ship around after just one case, why would they require unvaccinated passengers 12 and older to have travel insurance to cover COVID-related charges? If the ship turns around and goes back to port, once you are off the ship it would be up to the individual to find their way home, so travel insurance would be a non-issue for the most part. There is not one cruise line with a "turn around for a single COVID case" policy. If DCL is honestly going to turn every ship around each time someone tests positive, they should just shut down now. There is absolutely no way they can keep COVID off the ships and DCL has even put in their policy how they are prepared to handle the situation if/when passengers/crew test positive. Nowhere does it mention they will immediately turn the ship around after one case. If this was true, I am sure it would be included in their policy online, plus they would have massive cancellations because nobody would want to risk having to turn around on day 2 of a 7 day cruise. DCL would have a PR nightmare with having to arrange flight changes, transportation, hotel accommodations. I would also envision if DCL had the turn around policy for a single case, they would require 100% of the passengers to carry travel insurance. I wonder if the insurance would cover a situation such as this?