Worth it. Arrive at the time to do the cultural dance (book ahead), it finishes just in time to do the free guided tour right after. Great non profit keeping Maori culture alive.
Tour & show/feast is good value. At the end host will offer another trip down to the geyser but this time in a golf cart with hot choc waiting (in winter).
You don't wanna miss this place, awesome geyser, great people with fabulous performance by Maori people. Take the Te Puia combo, guided trip followed by Maori performance and dinner.