So I have my answer about what Dakota will remember about her 4th Birthday:
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Castillo Bouncy!
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I imagine that the Ancient Egyptians were going for the bouncy castle of Dora the Explorer when they instead built the Sphinx. Close, but it tooks several more centuries for art, culture, history, marketing, and hair dryer technology to align just right for civilization to produce the great portable Dora the Explorer bouncy castle.