In the mid-1960s, Igor Buketoff wrote an arrangement of the "1812 Overture" with chorus. The opening segment was sung by voices as a sung chant instead of being played by cellos and violas, the children's chorus was added to the Flute and Cor Anglais, and the full chorus was mixed into the winds—the entire orchestra, in fact—in the closing segment.
So is Bernstein's the more "traditional" performance of the two?
P.S. To those in the US: How many times did you hear the 1812 today?