One data source I like to use sometimes when determining weeks is Disney's own seasonal pricing rate schedule. You can learn a lot about what Disney "thinks" their crowds will be by studying the fluctuations in seasonal pricing. The below is an example I just looked up for a Poly TPV room. Both of your weeks in question are "Season 7" pricing. This kind of data will vary from resort to resort and even resort category, but I find it kind of interesting.
Lower rates don't necessarily mean lower crowds, but they are a good general proxy for overall demand, to some extent.
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