Should we head right to Costco from the airport when we arrive in Kauai for the week to get our supplies or since we'll only be there for a week should we just go to the regular store? We did regular store last time and I remember it being expensive, but not ridiculous (compared to Whole Foods, but without the quality).

Or maybe I could just ask the previous guests in the condo to leave some of their leftover food for us.