Never been to ones in Hawaii, but this is the spot to get basic staples that you need at decent prices on the strip (snacks, water, toothpaste, liquor, papers, etc...).
Be aware however, that some of the online prices for other stuff can be cheaper. I bought some of their Island Girl stuff for a friend and it turned out it was cheaper online by a few bucks... So unless you really need it immediately just buy it later.