The First Dance Announcement is often customized as in the examples below.
Most popular lately:
"Let's welcome _______and _________to the floor as they dance their first dance as
husband and wife"

East Coast style: The First Dance is done before Dinner, as you arrive in the room.  
This requires a dance floor that is clear of tables, however.  
The East coast style is more entertaining for guests, and allows the DJ to demonstrate
the sound quality and some lights early on, resulting in more guests staying for the
dance later on.   Other spotlight dances could be done between courses.