With a 6 year old, the games at 'Ohana should be a lot of fun. However, we are in the minority in that we did not enjoy the food at 'Ohana. We did think a couple of the appetizers, the pineapple bread, and the pineapple and caramel for dessert were very good. But these items were not worth the cost of the meal, and none of us cared for the meat at all. I rarely eat meat and my husband isn't a big meat-eater either, so I wasn't surprised that we didn't care for the skewered meat. My two teenage DS's are meat lovers though, so I was very surprised when they didn't like any of the meats served at 'Ohana. If you've been to a restaurant that serves meat in a similar manner and didn't like it, you may feel the same way at 'Ohana.
Kona Cafe is one of our favorite WDW restaurants. There isn't a lot of theming and there aren't any activities like at 'Ohana, but the food is delicious. We've been there several times over the years and have had a great meal every time.