For our first trip to China we will spend a long weekend in Hangzhou/Shanghai.

Have booked the Hyatt Hangzhou for an upcoming stay at the end of the month. We land on Friday in Hongqiao T1 from HND and were planning to take the metro to Honqiao train station and then buy a ticket for the high speed train to Hangzhou. Not sure if they take CC, so would it be best to exchange currency or use ATM at SHA?

Not knowing how long it will take us to go through customs I'm not sure if I should reserve train tickets in advance and just planning to buy for the next train when we arrive early afternoon. I noticed some trains go to Hangzhou East instead of the main station. Will it be possible to take the metro to the Hyatt from both stations since I've read that taxi lines can be very long. Some websites state that Hangzhou East station is not yet connected to the metro, but they might be out of date.

Also do we need to buy our tickets in advance for our return to Shanghai on Saturday afternoon since it will be more crowded on the weekend?

Thanks for your advice.