Think some type of folder that can or has been modified to accept 120 film, most (i believe) used 620 which doesn't really exist in any practical quantity anymore. You can use a 4x5 or 8x10 view camera too, or if you've got some deep pockets, the Leica II came out in 1932..

Honestly, I don't know my vintage cameras as much as I probably should, personally i'd try to cut losses and shoot with a Nikon F with the photomic finder and shoot a bunch of Tri-X and/or Portra. That way you'd have at least some sort of reliable equipment that could keep up with the wedding.