We took a cab to AKL. The bus takes a lot of time for resort to resort travel - although it can be done - and often longer after dinner if the parks have closed. The cab fare (including tip) was under $15 one way.
We also took a cab to MK at least once, because the buses were crowded and we were getting a late start. The buses are adequate, but we had two slow moving seniors, two preschoolers, and I get cranky if I'm not at the park at rope drop.