Chinese say 入乡随俗(Rùxiāngsuísú), which means follow the local custom whatever you go. My friends have a Chinese background, they had a wedding at the All Saints Anglican Church, a western style wedding, followed by a reception at the East Ocean Restaurant (a Chinese restaurant). The wedding was a great combination of eastern and western traditions.
A wedding is one of the happy events in Chinese culture, other happy events include: having babies, job promotion, buying properties, birthday milestones (e.g turning 60). I hope the newly weds get all of these.