Cruising out of Shanghai - Visa Requirement

We are flying out of San Francisco, USA and arriving in SH at 1115AM then boarding a Princess cruise ship straight from the airport. Ship is scheduled to depart at 5PM the same day.

Do we need to avail of the Visa for China or can we avail of your 72-hour visa transit at the airport?

What documentation do we need to show at the airport in San Francisco, USA of the visa exemption?

Thank you!