What is the schedule for the Pearl River night cruise ?

I will be in Guangzhou at 23:30 and I have about 6 hours time after that I must go back to the airport.My question is:
1- Do you think I can take Pearl River night cruise?
2- Do they have a night tour after midnight (00:01)?
3- Can you tell me how I can start my trip from the airport to the place where I can take my night cruise?
4- How much it will cost if it possible to tell?
3- If I cannot take this night cruise,what you think I can see after midnight?


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