When I tell people that I’m officiating weddings on the weekend, a question I’ve been asked a number of times is “Why do Japanese people like ‘Western-style’ weddings?”
The biggest reason is “Because it’s cool,” but if you’re interested in reading more about it, I just happened onto the seiyaku.com web site, which does a fabulous job explaining it:
http://www.seiyaku.com/seiyaku/en/western-wedding.html
Their description is pretty accurate for the ceremonies I perform, too- which makes sense, because Japanese people like to do things the same way everyone else does.