You will love Ohana. We have gone 2 times now. Menu has changed a little from the 1st time we went back in 2006. But still good.
Went to the Luau about 10 yrs ago, it was ok, the amount of food was average, they didn't bring 2nds or anything. Not worth 2 credits now though, Ohana is much better.
We will be going for breakfast on the day we fly out with our 3 kids and my mom.