Go to the Polynesian Cultural Center.
Spend the afternoon, learn about the various Pacific Island cultures, and then stay for the luau.

Not sure what you mean about "NOT" being interested in the pig roast.

Most luaus try to explain the pig roasting ceremony and all that, but you can skip it; (I was at the Paradise Cove luau in March and some obnoxious Mainlander wouldn't stop yapping into her cellphone the whole time they were going thru the history of the ceremony) but you'll miss out, imho.

Of course, you don't have to eat the pig if you don't want.

In fact, most commercial luaus don't serve you the pig you see in the ceremony, due to State of Hawaii Dept of Health regulations...........