.on such short notice

[Saneta]

http://www.english-test.net/toeic/listening/two_customers_talk_about_the_service_and_the_food_at_a_restaurant.html

please explain:
1.on such short notice= in a short time?
2.evening's still young= it is early now, in this evening?

Thank you .;-)

[Beeesneees]

1, without any warning.
2. You are correct.
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Cheers m' dears!