Details.

 Wedding photographers we always keep an eye out for any small details that make a wedding distinctive: flowers pieces, table decor, the bride’s corsage, the groomsmen’s boutonniere, etc. 

 Getting close and/or zooming in narrows the depth of field considerably which means that some regions will not be in focus, it is effective, but it also means taking a number of versions to ensure that you can then pick the best one during post production.