AKL is a huge resort and rarely sells out completely. This means that you can often get really good deals on this resort much cheaper than the other deluxes.
Always ask when you phone disney to book if there are any special rates for your dates at AKL.
Another way to save is to go for a standard room over a savannah. The standard rooms won't have a view of the savannahs where the animals are BUT there are plenty of animal viewing spots around the lodge anyway! So you can save a fortune and all you'll lose out on is the balcony.
They do also sometimes upgrade from standard to savannah but this is now much rarer than it was so advice would be dont book standard thinking you're sure to get an upgrade.