I just have to chime in!
We ate at Jiko a couple of months ago, and I was floored by how good it was. I have eaten at every restaurant in the world, and Jiko is far better than any of them. The lighting is beautiful on that back wall as it changes collor throughout the evening. It is nice and quiet, has a good view of the pool area (you mostly just get the light reflecting off the pool, which is nicer than the pool itself). The food is more creative than anywhere else, but the service is fantastic, and if you have any questions at all, they are very honest. My wife had the monkfish, and it tasted just like lobster. Get there early, the often run out as the work is getting around.
Boma is pretty good, for a buffet. I am fundamentally against buffets. Nothing like food prepared for 200 that sits out for hours under heat lamps until you come. The food was good at dinner, but the desserts were great. It was very crowded for dinner. When we stopped by for breakfast, it wasn't as crowded, and the food was good. Not Kona Cafe good, but good.
Make sure you make priority seating for both Boma and Jiko. We called day of for Boma, and no problem getting in (for dinner, didn't call for breakfast, just went early). We called ahead for Jiko, and still didn't get our choice of times.
Unfortunately, I think that this is the only flaw with AKL. If you stay at the Contemporary, or any other deluxe resort, there are two other deluxe resorts in walking or monorail distance, greatly increasing the total amount of restaurants available. While at AKL, you have to drive or take a bus to get anywhere else. While that increases the sirenity, it also increases the hassle factor. The wonderful thing about WDW is the amazing aray of food choices, and by staying at AKL, you make it more difficult to enjoy all of those choice.
By the way, there were three kids in Jiko when we were there around 9:00 PM, all of them were asleep on the table.