Ohana has a strong following, even on this site. I would not there is a very accurate review within the roundtable archives regarding Ohana.
This is another over hyped restaurant and many people have a good time here. If you had asked me about a decade ago I would say it was a good restaurant,today it is one not on our list. I believe the dining plan and first time guest make this place still a very busy place. Its also been prone to non-polynesian menu changes over recent years...some of which still remain on the menu. Many people visit here for the theme and the ability to eat all you care to eat or shall we say in some cases.. as much as they serve you. Like most tourist traps they offer non-food gimmicks like the kid activities while others obsess in getting a window seat to watch Wishes. You should also be aware that your dining location is important in defining your dining experience too. If you have been here before I would recommend telling them you have never been there before and do not accept a table in the area behind the grill close to the lounge (bar).
Service is consistently inconsistent depending on your servers attitude and ability. There are also server assistants who consistently bring out side dishes to your table who tend to throw or drop dishes on your table and leave without a word. Servers totally disappearing is frequent and when in view may normally be observed catering to first time guest identified with all the extra treatment and information.
Food preparation is also inconsistent with many meats served overcooked (tough), while shortages of specific meat items (beef) during meals is common to a point it should make you think it is a Disney cost control measure. I would also note the shrimp served here is rock shrimp.