We love both places.
WCC is my husband's favorite. The food and the service is good. We didn't have issues with the antics getting in the way of dinner or service. Dinner there has never taken more than 45 mins to an hour.
Boys seem to love this place. It is rustic, loud and fun. The servers often get the kids involved with stick horse racing, running for ketchup and so on.
Ohana is good as well. They have games for the kids, like rolling the coconut. But word of caution, dinner can take a long time the later in the evening your ressie is.
I don't think you will make a mistake with either, just pick which menu looks better to you and you should be set.