There are no all-inclusive programs on the Island of Maui...nor the entire State of Hawaii. There is a Costco near the airport, plus multiple Kahului grocery stores (Target, Safeway, Whole Foods, etc.). The south and west sides also have grocery stores such as Safeway, Long's, Foodland, Island Grocery Depot....plus smaller farmer's markets. Resorts sometimes have small markets for some essentials.
Cay S.