As others have said, I generally haven't found any consistent free wi-fi within the parks. As mentioned, the only fairly consistent location is near Grizzly River Rapids because you can pick-up the GCH's wi-fi- signal. I suspect the same things goes for WoD and other DTD locations that are near to the GCH (not counting Starbucks, which provides wi-fi). Otherwise, there isn't any consistent wi-fi in the park (you may occasionally come across another guest's local hotspot, but that's about it).