With kids your ages, definitely 'Ohana! In my opinion, more variety of food, they can eat off of the regular family style menu offerings, there is a lot, something for everyone, or they can order off a kids' menu (mac and cheese, chicken strips, etc.). There is entertainment that the kids can get involved with during dinner, the kids get the leis, and the Polynesian is an awesome environment. You can stay and watch the fireworks and Electric Water Pageant from the beach as well. You can make an entire fun night of it!