I love the cabins! We stayed there in June and absolutely loved having all the space and the extra beds. The full-size refrigerator was also a huge bonus.
Now there are some things that people dislike about the cabins. Within Fort Wilderness, you are heavily reliant on buses. There are buses to take you around the resort (which is huge!) and buses that also take you to the different parks. During our stay in June, they ran pretty regularly and we didn't have to wait more than 10 minutes for a bus. On the plus side, you can take a boat from the marina to the Magic Kingdom - which is fabulous!
Also, this resort is really spread-out. We are the type of family that love to be somewhat secluded. This means that we prefer not being really close to people.
Another plus is that there is TONS to do at this resort. Kayaking, fishing, pool time, horseback riding, watching fireworks from the beach, etc.
We have not stayed at AoA yet. That is on the calendar for December. Whichever way you go, hope you have a fabulous trip!