Who is Hired Help from Islands in the Stream and what is their importance?

Thomas likes his hired help on the island of Bimini better that those in Cuba. Eddy on the island plays a significant role in two major scenes—once while a shark threatens David, and again when David hooks a big swordfish. Phillip on the island takes very good care of Thomas and the boys. However, Thomas dislikes his moody chauffeur and unreliable house help in Cuba.