Look at the guests / bride.
bride
What's he doing?
He's dancing.
The girl has got a cake / an invitation.
an invitation
Listen to the band / wedding.
band
What are they doing?
They're eating.
They're sleeping / talking.
talking
They're eating / playing music.
playing
She's wearing / eating a white dress.
wearing
What are they doing?
They're talking.
We're reading / eating the wedding cake.
eating
What's he doing?
He's taking photos.
What's she doing?
She's drinking.
This is the wedding cake / band.
wedding cake
Look at the invitations / guests.
guests
She's reading / singing the invitation.
reading