2 of us are going to EXPO from 20 Sept to 26 Sept .
[1] are there any more 3-day tickets on sale?

[2] we are taking Speed Train from Hangzhou to South Shanghai Railway, are tickets available on same day ie. 20 Sept.

[3] can we buy Train tickets on-line?

[4] Shuttle Bus from Hangzhou Airport to Hangzhou Railway Station regular?

Thank you.