Okay,here’s what you want to do.

ABC is expensive, so it is convienent, but pricey.
Food Pantry is in Waikiki, but also expensive.

Best bet, ask the hotel person how to get to Safeway on Kapahulu by bus (you could actually walk there in about 30 minutes or so, but might get tired with groceries). It’s is a really nice supermarket with everything. If you are able, sign up for their card to get the Safeway Card price.

ABC stores are only for tourists with money to blow….look for Costco, cheaper better too

It may be better to ask, what exactly do you want to purchase? An organized vacation budget could mean you are planning some cheap meals or just snacks. I found the ABC stores lacking in the way of quick ‘cheap’ meals. If you can find your way to a Foodland, Safeway, or other full service grocery store, you should be able to find those sort of items. It wont be as cheap as at home, but it will be better than the outrageous prices paid at restaurants on/near Waikiki.

abc market is right around the corner over the bridge right next to the big parking lot with all the chickens

You won’t find a Walgreen’s in Waikiki, but there is one by Ala Moana. As for convinience stores there are ABC Stores everywhere in Waikiki.

right behind the hotel is an ABC store you’ll see hundreds of those in waikiki.

its pretty cheap there