"Unreasonable" depends on where you intend to stay and where you have to return to for the additional testing. Probably makes many out islands nearly impossible and if on charter you have to return to base. Then what happens if you test positive on day 5? The testing on day 5, both in the Bahamas and BVI really makes little sense as incubation can take longer. I noticed that you can't determine the cost of your "Visa" until you upload your test along with number of travel days.