Hi, jake1020 and welcome to the DIS!
These resorts were designed by the same folks so there are alot of similarities between the 2. BIG lobbies that feel very big and, as with most WDW resorts, great attention to detail.
We have never stayed at WL.
We loved the AKL. My kids had a great time whether we went to the parks or stayed at the resort. The staf at AKL was equally great with the kids. Boma was fantastic! We all loved the pool(although the water was a bit warm) and the spas! I loved watching footbal from the pool! Let us not forget the late night viewing of animals and walking outside or sitting by the indoor or outdoor fire pit.
If you have 5 in your group the AKL could be your only choice. WL has single rooms for 5 but they are Jr. Suites and are quite often booked early, especially if you are trying to book using discounts.
Either way you should probably decide quickly. Last I heard (or should I say read) rooms were getting scarce.
Have fun and welcome!