According to the Comune di Venezia, more and more wedding gondolas are being filled with non-Italians. Over the last decade, there has been a 254% increase in the number of marriages in Venice in which both groom and bride were foreigners (see the Veniceblog graph below). Mostly it's other Europeans (85%), with only a smattering from North America (7%).
Guess I was ahead of my time, though I wish I hadn't been. I had an ill-starred wedding there myself in 1992.