You are very lucky!! We just stayed at AKL and had a wonderful time!! It is a very beautiful and relaxing resort.
You really can't go wrong with the restaurant choices there-they are all great!
We went to the dinner buffet at Boma and honestly, I could have eaten there every night it was so good! I've heard their breakfast buffet is good as well.
Never been to Jiko, but it gets fantastic reviews.
The Mara was a wonderful CS restaurant. We did breakfast, dinner, and a late night snack there. They had the best chicken strips I've ever tasted.
Just be sure to get ADR's if you go to Boma or Jiko-these places tend to fill up quickly!