My BIL introduced his haoles side of the family to this place. For years it was "plate lunch" this and "plate lunch" that, so I was more than happy to finally have a reference for all the SPAM based conversations.
Ono is friendly, crisp, and clean. They serve a mean Hawaiian BBQ Mix
(BBQ Chicken, BBQ Beef & Kalbi Short Ribs) and Chicken Katsu (a breaded fillet served with... duh Katsu sauce). The soups are tasty and the macaroni salad that everyone references definately lives up to its reputation. Portions are large, so unless you want to take food home, get one of the mini-meals. It can get a little busy at lunch time, but service is amazingly quick.
The BIL swears this is the best plate lunch he has found off the island and goes to his happy place with each visit. If you are looking for a different kind of barbeque, try Ono on for size and you too can be hanging ten in no time flat.