If you're going to WDW to meet some characters you really have to visit kennythepirate. His character finder service is like $8 or $10 and well worth it. I'm just a fellow subscriber, no paid endorsement here.
Yes, definitely get Kenny the Pirate's app as others have said. Our trip isn't until May but I subscribed in advance to get an idea of how the app works. It's fantastic and the grandkids will think Nana is a genius knowing where all of their favorites are each day
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