Quest #12834 (possibly named "Not Rain Nor Snow Nor Exploding Plane") doesn't exist. It may have been removed from the game.
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Not Rain, Nor Snow, Nor Exploding Plane - Live
Not Rain, Nor Snow, Nor Exploding Plane - PTR
Not Rain, Nor Snow, Nor Exploding Plane - PTR 2
Not Rain, Nor Snow, Nor Exploding Plane - Beta
Not Rain, Nor Snow, Nor Exploding Plane - Wrath of the Lich King
Not Rain, Nor Snow, Nor Exploding Plane - Cataclysm