Black tie question

[JSFMACLJR]

I had realised where the wedding was taking place, but I had not appreciated that the white tie and full evening dress was worn to weddings over there.

You'll find, Jock, that evening weddings are quite common in the South. At a number of these weddings, the groom and groomsmen do wear full dress. Male guests often wear dinner jackets.

At daytime weddings over here, it is quite rare for male guests to wear morning dress, although one occasionally will see this, but certainly not in the numbers one would see at weddings in the UK.