I haven't stayed at the AKL.
We did stay at the Contemporary with our almost 2 year old and it was fantastic! We picked this resort solely (sp?) based on being able to walk to MK. We enjoyed the walk and my dd loved chasing the little lizard thingys all over the sidewalk! As an added bonus we were steps from the playground and DD adored playing and running around on the sandy beach.
It was so convenient to be able to have so many food options within walking distance. Concourse Steakhouse, California Grill, food court and of course, Chef Mickey's. DD LOVED watching the monorail. We'd go out on the observation deck, where the monorail passes right over your head, and just wait. She'd get so excited and just wave and wave while the "train" went over us!
As you can tell, we loved it! The convenience factor alone is all it took for me.