Eat where the locals eat

Oahu
Zippy’s – most popular restaurant chain in Hawaii famous for chili, fried chicken, macaroni salad, zip pacs, and more!
Ono Hawaiian Foods – This restaurant serves authentic, ono (delicious) Hawaiian food).
Rainbow Drive-In – Long time local dining, known for having the best plate lunch on the island
Giovanni’s Shrimp Truck Thisgraffiti-covered truck is the oldest and the best known on the north shore.
Leonard’s Bakery – Do not miss getting malasadas (Portuguese donut without the hole) here

Maui
Da Kitchen – very popular local eatery known for having good food at reasonable prices
Paia Fish Market – The best place to get a fish lunch on Maui - try the famous fish burger.
Lahaina Coolers – Open-air bistro with affordable cuisine, away from the hassle of Front Street.
Fran's Island Grill –serves casual homestyle meals and basic local favorites

Kauai
Hamura's Saimin Stand – a renowned saimin stand where locals line up to get their serving of this island specialty
Bubba’s Burgers – an authentic old-fashioned burger joint
Kalapaki Beach Hut – a tiny eatery in Lihue that specializes in breakfast and burgers
Tip Top Café/Bakery – has been serving locals since 1916…known for their macadamia pancakes

Big Island of Hawaii
Sandy's Drive-In – One of the Big Island's best drive inn's. Home of the famous boneless chicken
Hana Hou Restaurant – friendly diner offering meat and fish plates, along with extras like stir-fries and chicken parmasan.
Big Island Grill – One of the best-kept secrets among local residents , where you get huge servings at 1970s prices.