We just got back last week. We used the kids ipods, as the parks now have wifi. At the resort we used the Nook. The kiosks were not to busy but it is not fully rolled out yet.
We did not use all our fast passes as the lines were not so bad. Toy Story Mania & Test trek & Soaring were the only ones that had more than a 20 min wait on any given day. Most had 10- 15 min and that might have been that it took you that long to wind through the queue.
The kids would get off the rides and go right back through with minimal wait.