There are 7
Sandals in Jamaica (Montego Bay, Royal Caribbean, Ocho Rios, Dunn's River, Negril, Whitehouse, and Inn); 3 in St. Lucia (Halcyon, Grande, and Regency); 1 in Bahamas; and 1 in Antigua.
Each have different restaurants, activities, and amenities. I'd say do more research on their site.