I kind of think it's just because it's pretty, etc. Now, it's nice for Instagram, etc. In more classic terms, it makes for a nice visual memory of a day. But, it sounds like in practice, a lot of the memory of the day would be about the arranging of complicated things that often go wrong.

My wedding was just signing some paperwork at the Family registration center(Taiwan). My wife had had a traditional wedding with her ex. Not fun. Mostly just a chance for her FIL to do business.