Luaus can be big or small, mass-produced or authentic. Our hotel set us up with a two-for-one deal for a luau at a big hotel down the strip. There were quite a lot of people lined up to get in when we arrived -- it turned out this was going to be more at the Disneyland end of the luau spectrum.
One sign this was a factory luau was the shell necklace instead of flowers. The tiki torches are a nice touch though.
Only the best buffet food for us. (The cave behind us is actually the stage for the show.)
The show was a meddley of various Polynesian cultural stereotypes. Indeed, it was hard to watch the show without a slight sense of embarrassment.