Interesting question! I don't think red/blue 3D glasses were ever used on any Disney attraction.
The first 3D attraction at WDW was Captain EO, and the glasses provided weren't red/blue.
I stand corrected.actually Magic Journeys was there around when EPCOT Center opened, Captain EO replaced it. I don't know if there was any other 3D movies prior at MK or if they were only in Disneyland
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