Not sure about this, but they do have pin boards in the resorts that you can check where you are staying or others you may visit for ADRs. They often have them at the front desks, as well as in the store. Also had one out at Mousegears in Epcot a few weeks ago when we were there. BTW cast members are generally very welcoming for the kids - I know my DD was 5 and was the same way at first, but soon warmed up as she got into it. In fact we had a great experience with a CM at AK who could see she really struggled to part with a pin to trade for one she really wanted from him. After she walked away, he ended up coming back over and giving her pin back, saying he could see how much she loved it! Very sweet!