We have stayed there twice with our friend who has a service dog and both times were in a Savannah view. When we spoke with them we learned that they cannot limit you to certain categories, in other words if someone without a service animal could book the room, they had to allow you to book it. Of course if a category is sold out for everyone else, having a service animal will not get you into a room in that category.
Unless you specifically ask to be placed somewhere else, they will give you a room as close as possible to the elevators to make it easier to take the service animal out for relief. They do request that you not allow the service animal out onto the balcony if avoidable and if you must do so, the service animal must remain on a leash that is being held while on the balcony (i.e. same as when in the parks). The second time they did offer to setup some fake grass on the balcony, which our friend refused for various reasons. I can honestly say I don't know if that part is normal policy or not, but just an FYI that it might be an option.
They also request the service animal not linger near the Flamingos or other sensitive animals. The other sensitive animals may vary, such as the Okapi had a baby when we were there, so they asked that the service animal not linger there. Additionally if either your service dog is getting stressed by the animals or the animals are being stressed by the service dog they ask that you remove the service animal from the situation immediately. This is true both at AKL and in AK as well. If you are in your room and have your balcony door open (or even just the curtain) and either the animals or your service dog is getting stressed, they ask that you close the door and curtain immediately.
For our friend's service dog, none of this was ever an issue, aside from our friend loving Flamingos, so we had to come up with a viable way to allow her to see them without her service dog.
Also, just like with any of the other resorts, the service dog cannot be left alone in the room at any time.
Overall you will most likely find it no different than staying at another resort with a service dog, aside from having the amazing views of course, so enjoy, but as others have said do let them know you have a service dog when you book.
Oh, one more thing, you should be able to do online check in, but you might not get a text with your room number, as you may still have to visit the front desk so they can tell you where the sensitive areas are at the time of your stay for the comfort of your service animal as well as the health and safety of the animals.
