Glad to hear that Disney is willing to deal with the defective ears, but our mileage varied quite a bit. We received our ears at the AP WOC event, and by the time of the Fantasmic! event, both pairs were not working (even with fresh batteries). F! CMs told us to exchange them, but when we tried, the CMs at the kiosk refused. They told us that since the ears were marked on the tag as being from the AP event, they could not be exchanged since they were free. When we said that Guest Relations had said exchanges were possible, they very reluctantly (with lots of attitude) found 2 pairs under the register and gave us those. Turned out that those pairs were defective (probably why they weren't out on the display) and one pair even had someone's name written inside (so it couldn't have been new). After F!, we finally found a nice CM who exchanged the 2nd pairs for new pairs, made sure they worked, and did everything with a smile. Yay for him!
A poster on another board said that she was refused batteries throughout DCA until she finally found a sympathetic CM by GRR. He gave her new batteries and installed them for her.
All this to say, if the policy on the GWTS ears has changed and trickled down to CMs by now, great! But, as with all things Disney, just be prepared that things might not go so smoothly.