Lots of options when it comes to luau's on Oahu. We've been to Germaine's twice and love it. Great show, good seats, delicious food, and amazing views.
Get there early, but be prepared to wait....everything is on Hawaiian time, especially when you are waiting on tour buses.
Grab a seat on the bleachers EARLY if you actually want to see the pre-show. Not enough seating here would be my only complaint.
Look at discounted tickets to get a better deal on admission.
Overall, a great experience. You won't be disappointed!