If quality of food is not important to you and you don't MJ d paying $120, then yes, it's great for
Families with small children
I didn't have my kids or grand kids with me. But I did see all ages and they seem to enjoy it.
Our nearly three year old really enjoyed the one at the hotel. Go for the premium seats!
Best Luau, Luau Grounds and LUAU SHOW on the coast. Their Clambake on Saturdays is also awesome but for kids a bit pricey (unless they are teens) and the food is good.
Get an answer from Mauna Kea Beach Hotel, Autograph Collection staff and past guests.