We've done this twice. We actually liked all the food ( BBQ ribs/chicken with veggies/rice ) it's served on a giant plate " feast style ".
The show has the Big Polynesian muscle bound guys and the pretty hula dancers. The put on a show with these glowing batons that is pretty cool too.
They close it out with the fire twirler - really cool.
The only downer for us was that the show is outdoors and it can be hot. I would much rather sit in some AC to eat dinner. You are also at risk rain messing things up.
If they are into the Hawaiian thing, they would like this show.