I "know" nothing of the sort. My mother was Catholic and my father was Lutheran. They had a Catholic wedding and the marriage was perfectly valid in the eyes of the Church. A non-Catholic is not required to become a Catholic in order for a marriage to be valid in the eyes of the Church.
Same here. My mother was Catholic and my father Methodist. Catholic wedding, he never converted.
But, Iscool is clearly the authority on Catholicism, so we people with actual knowledge of such things should show his intellect the respect its obviously due.