The 'party' group
These nouns refer to events.
at the movies at the races
I was not at the meeting so I couldn't defend myself.
I do cry at the movies - I'm a very sensitive person.
They met at a party in 2014 when she was Fashion Editor.
I was best man at his wedding, and we see a great deal of each other.
The following are used as normal count nouns.
ball banquet barbecue ceremony concert conference dinner party festival funeral hearing match matinee meeting news conference party press conference rally reception summit talks trial wedding