Go for the show, not the food. We definitely loved every second of the hula dancing the the show. We had better food elsewhere in our Hawaiian travels and were wishing we bought the 'show only' ticket as we don't eat enough to maximise the buffet dinner.
Food was not great and the chairs were uncomfortable. It was a pleasant evening except for that. Loved the train ride around the plantation.
We very much enjoyed the experience of this Luau. The dancing was just wonderful --- I've studied classical dance all of my life and thought that the hulas were exquisite. We were so relaxed and enjoying ourselves so much that we left that evening without taking a bag of souvenirs with us --- we accidentally left the bag under our table. The next day we returned to the facility and recovered our bag --- we certainly did not expect to ever see those items again! We went to the luau the last evening of our trip to Hawaii and it was a highlight of our experience.