You'll love AKL. We got an upgrade from a standard view room to a Savannah view just by asking politely at check in. It was awesome.
If you pay for a Savannah view, ask to **not** be on the Sunset Savannah. There are no zebras on this side of the hotel and the animals are very shy. One of the animal keepers last May told me to always ask for one of the other Savannahs.
Make sure you plan time to hang out at the hotel. There's enough stuff to do there for a vacation by itself. They'll give you a schedule when you check in....cookie decorating, storytelling, keeper encounters, art tour, pelican feeding, night time viewing with night vision binoculars, hidden mickey hunt, pool games, etc....and of course the animals. If you love animals, this is def the place to stay.