I have heard many times that people have saved a lot of money buying gas at Costco. Does that mean that Costco locations on Maui and the Big Island have their own gas stations, and one must fill up there to get the savings? Or does your Costco membership card get you a discount at any gas station?
What other things could we save on if we joined Costco before we leave for Maui and the Big Island in September? Souvenirs?