I work during the week, so Internet access is key. We have SXM Digicel 240Mbps hot spot on an iphone, AT&T international roaming, and Starlink Roam with the standard antenna. Digicel is great, until it is not. AT&T with international roaming is quite reliable at $10 per day. We use Starlink when we are on anchor. This approach worked from SXM to Grenada. Digicel was poor at Deshaies Guadeloupe and St. Pierre Martineque, while Starlink was good. On land, we used AT&T international roaming if the Digicel hotspot was not good.

Grenada to SXM, I would get a Digicel or Flow sim for a phone hotspot. Starlink Roam with the standard antenna is good enough. The eastern Caribbean is considered North America. One thing to watch out for, Grenada customs may want to charge you duty. You can avoid duty as yacht in transit if you use a broker, give them the invoice, and get your C-14. The Grenada Cruisers Information facebook group has information on this in their files section. Life will be simpler if you have a copy of the cruising permit for the vessel, so you do not have to document your ticket for exit of the country.

Cheers, RickG