I just posted this on my own blog but thought I'd nip in and post here too. I thought it was an interesting thing.
I played at a wedding yesterday with my wind trio. We've done hundreds of weddings but this time the celebrant said something I've never heard before, but is blindingly obvious in hindsight.
When they'd taken the vows he said, "You may now kiss your bride in public."
It never occurred to me before, that this tradition stemmed from giving permission for a couple to kiss in public.