Empty exam hall in closed school

The video concludes with a final statement indicating that everything is prepared and ready.

What does the phrase 'they're all set' imply about the situation?

In what contexts might someone say 'they're all set'?

How can the phrase 'they're all set' be interpreted differently based on tone?

What are some synonyms for 'they're all set'?

Can you provide an example scenario where 'they're all set' would be an appropriate response?