Why is Sydney Airport closed at night?

Related questions

1. How much does the train to Sydney airport cost?
2. What time Sydney airport closed?
3. Are flights from Brisbane Cancelled?
4. Whats cheaper Uber or taxi?
5. Can I sleep at the airport overnight?
6. Is Terminal 2 Sydney domestic or international?
7. Will flights get delayed for thunderstorms?
8. Why is Sydney Airport called Kingsford Smith?
9. Is there free WIFI in Sydney Airport?
10. Does Sydney Airport have a curfew?

Tags

1. #night
2. #sleep
3. #technically
4. #sydney
5. #limited
6. #security
7. #sleeping
8. #airport
9. #hours
10. #while
11. #overnight
12. #inside
13. #terminal
14. #waiting
15. #close
16. #international
17. #terminals
18. #where
19. #designated
20. #domestic