What is the entrance fee to the reserve and is there a cost to pet/play with the pandas in Wolong?

As I know, the mountain entrance fee is around 15RMB. If you want to enter the panda museum, you need to pay 30RMB for the gaint panda museum and 5RMB for the little panda museum.

I am not very clear about the playing fare, because when I was told that the reserve was not opened to the public yet.