2 hours aprox. But up to you!!

Sorry, but I dont have this information.did went on the website? I think you ll get your answer.Have a good time there,Alex.

Yes Yu Yuan is free. But to go inside the temple need to pay a fee.

Which question my dear?

I do not remember paying anything. If you go inside the "tea house" you can order food and drinks.

Vor de Reise habe ich viele Fragen von Google übersetzen lassen und ausgedruckt

I apologise for any confusion over my poor use of the word first to qualify what I meant to say was launching place for "knock off" branded products with the usual names of D & G being reengineered for tourists to buy. I use these terms advisedly when heard from Chinese tourist guides. Whether you buy these lesser ad non guaranteed products is up to you. Good luck. Ian

It's 80 CNY total.

Yes. The first time I went there on a Monday morning. Could take photos because less people. No queue required to go to the famous dumpling restaurant. In Shanghai, museums close on Mondays. For commercials, they are open... for more business. Yu yuen is basically a commercial area.

Get some cash, I had a VISA card however in some places only accepted wechat/ ali pay or union pay card.