I have been twice over a span of about 15 years. The show is probably as good as what you would see in Hawaii (I've done that too). Not great, but some entertainment value is there. I liked the food, ample supply of several choices of meat and veggies served at the table with dessert. I do not drink, so am not sure if there is a limit on alcoholic drinks or not.
Bottom line, if you have not been to a luau type show and there is little to no chance you are going to Hawaii, I would recommend doing the Aloha Show.