A vacation to Hawaii doesn’t have to break the bank. Take advantage of coupons in the free publications stacked at the airport and in racks all over Waikiki. Online sources like Groupon offer discounted rates for everything from dinner cruises to massages. Buy your souvenirs at Longs rather than at shops catering solely to tourists, and you'll likely get the same goods for less money.
You don't need to stay at a pricier waterfront hotel when, in Waikiki, almost all hotels are a short walk to the shore. Access to beaches and most hiking trails on the island is free to the public. For inexpensive fresh fruit and produce, check out farmers' markets and farm stands along the road—they'll often let you try before you buy.
For cheap and quick lunches, consider a food truck. Part of the culinary landscape of Oahu for generations, these lunch wagons—which rove around downtown and other areas—charge substantially less than restaurants. Take advantage of pau hana time (happy hour) for cheaper drinks and appetizers at many establishments.