We've been 3 times, the last trip was in December. We have had the best servers ever at Ohana, each time we went they were incredible. They must make a lot in tips because it felt like the level of server at Ohana was a tick or two above other TS restaurants we've eaten at and we though those other servers were great! Very professional and courteous.
The food is incredible. We have dreams about the meats! I don't know how they get it to taste that good. They're cooking it out in the open, over a fire, and yet something about it tastes way better than any grilled meat I've had before.
I'm gluten free and I would gladly give up a toe or a finger in exchange for just one bite of that dessert they bring out. It should be outlawed. Just looking at it I wish I could dive, head first, into it.
It seemed fairly relaxed to me, when they weren't doing the coconut races of course! A guy was walking around the dining area playing christmas songs on a ukulele. Sooo soothing. I think the music aided my digestion so I, of course, could eat more meats.
Go for it! And enjoy your trip!