My DW and I did 'Ohana back in Jan 2002, and we were asking each other, while walking back to the parking lot after the dinner, if we could come back next year! So we did, Jan 2003 we went back, and took my mother (who drove up from Tampa that afternoon). She stayed at OKW a few weeks ago for her birthday, and took my brother to 'Ohana, and he ATE A LOT!
Anyways, as for Hoop-De-Doo, it is completely different than 'Ohana but it was good too. We ate at the front center table right next to the stage, I was moved in my chair during one song so they could get back on the stage between out table and the next.
I really love the food more at 'Ohana, but the show was fun at HDD. I don't know if we will go back soon, but I would not be opposed to the thought. 'Ohana, for now (as it was in Jan 2003), will be the only place we eat at each trip.
Not that I have made your decision any easier between these two places

but if cost is a worry, I would go with 'Ohana. There is still plenty of activities for kids, (and adults sometimes) at 'Ohana and you can't go wrong with the food.
Mike