Simple glance at the map makes it clear that operating out of anywhere except Florida costs the cruise lines big money. Trust me, others will accept non-vaccinated guests. Cruise lines need Florida more than Florida needs cruise lines.
Now the protocols for Alaska cruises are different and require vaccination. That's because of idiotic Canada.
This might be a good time to note that all the nations that cruises are stopping at in the Caribbean require vaccinations for incoming cruise passengers.
Component 3: Negative Molecular COVID-19 test required To create a safe environment for you — our guest — and residents alike, it is important that we have testing to confirm that all travelers are negative for coronavirus. All visitors, 15 years and older, traveling to Aruba must take one Molecular COVID-19 test within 72 hours and 4 hours prior to travel to Aruba