Meiji Jingu is one of the most touristic spots in Tokyo. It is also a pretty important shinto shrine and therefore zillions of weddings are celebrated there. I find funny that most first visitors to Meiji Jingu think they had luck because they could see a traditional wedding celebration going on there, they think it was a causality. But it is not, almost every day there are weddings in Meiji Jingu. So… if you want to see a traditional shinto wedding ceremony go to Meiji Jingu (JR Harajuku station) a Sunday or a Saturday.