Visa requirement for cruise stopping in Shanghai

Hi, We are doing a cruise from Sydney that will stop 1 day in Shanghai then on to Hong Kong where we will fly home from. I believe we only need a visa for Shanghai, is this correct. Also, a couple of quick questions regarding the application, it asks for the address while in China(2.6), do we just put the name of the ship, there is also a question (1.3) Other Names, can I just get confirmation we would put my wife's maiden name in this box. Probably silly questions but I just don't want to get the application rejected on a minor technicality.
Regards,
Rob