My family has gone to the luau on our last two trips and really enjoyed it. It took us several trips before we tried it, because of all the bad reviews I read. I think if you should try everything at least once and make your own decision. On both occasions the service was good and so was the food. I have never been to a real luau, but the show was cute and the fire dancer awesome, they even call up the kids to dance at one point.
Happy planning-
Lisa