No, it was a mid day wedding and the entire guest list was not in black tie, just a few members of my wife's family.

I have been to two weddings were the entire thing was black tie, and I have to say, there are apparently less rules with modern tuxedos than there are with kilts. The variety I saw at one, which even included no tie at all, and what can best be described as a cow pattern vest, really stretched the limits of creativity.