Husband and I (both unvaxxed) were at Grand Turk last week. The night before, we got letters in our stateroom indicating we would not be allowed to leave the ship. I cannot remember if I indicated vax status during check-in or embarkation, but we had cruised in October, and I do remember indicating status for that cruise. Day of GT, the cruise director announced several times that passengers would need to bring vax cards (physical or digital) to disembark. We didn't attempt to get off (we'd been to GT twice before) so we just enjoyed the lighter traffic on Serenity and no lines for food that day.