Marina and restaurant wifi
is notoriously crap. If you need anything resembling reliable internet
, don't count on someone else's wifi being worth a mouse's fart.
My internet requirements are quite high as my wife and I both work
remotely. We have used a Pepwave router with Verizon, AT&T, and T-Mobile, SIMs over the years depending on what part of the US Atlantic coast we're in, and we used "My Island WiFi" when we were in the Bahamas
. Currently we're using a Cricket SIM and an EZCOM SIM, both of which are AT&T service
, but curiously neither support use of alternate routers such as a Pepwave, so we're using their "mobile hotspot" devices which give inferior coverage but at least they function and are cheap
In the US territory Caribbean islands I would suggest AT&T. For others I suggest looking into local telco options.
Again, relying on public wifi is not a winning solution if you need something considered service