I have my (excellent copy) 28-300 Nikkor pretty much dedicated to my D800. But for weddings, I would suggest the 24-70 plus 70-200.
Others might suggest: There's another option out there, though. Get the upcoming 28mm f/1.8G, plus the existing 50mm f/1.8G and 85mm f/1.8G. You might add the 24-120 f/4 to that. I have the range covered several times over so have not tried that lens.