A lot of escape rooms state 3 – 6 or 4-8, but you physically only need 2 in the room.
↓ Transcript
Panel 1 -
Leezet (on phone): Hi, I noticed your room required three people. Can we play it with two?
Panel 2 -
Leezet: No, eh? It physically requires three.
Panel 3 -
Leezet: Sadly, we can't book your other rooms. We've done them already. Oh, we've done those too.
Panel 4 -
Leezet: He's suggesting other companies for us to try, but we've done them.
Errol: I could send him my spreadsheet if he wants.
Leezet (on phone): Hi, I noticed your room required three people. Can we play it with two?
Panel 2 -
Leezet: No, eh? It physically requires three.
Panel 3 -
Leezet: Sadly, we can't book your other rooms. We've done them already. Oh, we've done those too.
Panel 4 -
Leezet: He's suggesting other companies for us to try, but we've done them.
Errol: I could send him my spreadsheet if he wants.
There wasn’t a stranger to kidnap? Ooh, I know! Ask a worker to play under these conditions: the worker does nothing until given specific instructions. Unless you had to go into three different rooms, it could work.