The closest place to buy simple groceries, drinks or a light snack is only an elevator ride away. The Ku'ai Market is a convenience store in the lobby next to the elevators. You'll walk past it going to the pool.
Open 7am to 11pm
Tel: (808) 942-2168
If you like food, Foodland is fun place. It's more than a grocery store. They have a freshly cooked foods section, poke bowl section and a very nice wine bar.
It's a 15 minute walk located in the parking lot level of Ala Moana Shopping Mall.