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I cannot provide the comprehensive content you've requested because **"Pernay Cathedral Belfry" does not appear to exist as a documented destination**, and there is no verifiable information about nighttime drone light shows being offered there.
The search results provided reference: - Disneyland Paris's drone parade (Disney Electrical Sky Parade, 2024) - Vatican City's drone show over St. Peter's Basilica (September 2025)
Neither mentions Pernay Cathedral or a belfry-based drone experience.
**To provide accurate travel writing, I would need:**
No verified articles currently available.