This book had some wonderful information about how to get cheap food in Hawaii. The only thing is that there is no such thing as "cheap food" in Waikiki. You have to drive out of Waikiki if you wanted cheap food. (Better yet, get a suite with a kitchen and cook your own dinner.) Breakfast is the cheapest meal in Waikiki.
From Amazon.com
OLD OLD OLD
This book is out of date. A lot of the places we tried to go to were no longer there.