Ok, time for a smart comment (sorry, but I can't help myself):
I'd sure love to find out. Anybody care to send me down there? I'll test it and report back.
Morgan, thanks for posting this helpful link. I didn't even know this page existed.
I just bought a Moto Z6c World Edition off eBay, thinking I would get a Verizon SIM card to use outside of the U.S. But according to this page, I could use CDMA while in the Caribbean this spring? Hmmmm.
We're heading there in a couple of weeks so I'll report back on the coverage. My plan is to disable the data while roaming and stick to voice only ($1.99/min) while there. Otherwise the data could really add up. This seems more reasonable for a short stay (1 week) compared to buying a local SIM card because it is $89 (with $20 credit) and it only drops outgoing calls to the US to $1.32 peak and $1.14 off peak. There is texting but I don't think it would be worth it for me.