There is a rumor that Supermercados Nacional will be constructing a store in San Francisco de Macorís. This will be the closest Nacional to Las Terrenas.
Though Nacional is targetted mostly to Dominicans, it should be noted that this supermarket chain has the most foreign brands of any Dominican supermarket. Expats in the Samaná peninsula might be interested as some brands they might miss and is not available in Las Terrenas could be available here. The only products that could be an issue for expats to buy here and take to Las Terrenas are those that require refrigeration. Other than that...
Though Nacional is targetted mostly to Dominicans, it should be noted that this supermarket chain has the most foreign brands of any Dominican supermarket. Expats in the Samaná peninsula might be interested as some brands they might miss and is not available in Las Terrenas could be available here. The only products that could be an issue for expats to buy here and take to Las Terrenas are those that require refrigeration. Other than that...