It took me like 4 games to realize how people were chaining. unlike RB/SEA (etc.) you actually have to try and hit space like right in the center of the white area on the bar--the beat doesnt matter. It's a lot easier than it sounds once you get the hang of it :p.
Sorry this pic is realllllllly bad quality but here is what i am talking about
Give it a try next time. Also, Wedding party is kinda hard..Marcin and I failed like.. once or twice I think but we got it
. Weddings on WIA are SO cute like omg ;_;.