Arriving via cruise in Tianjin. Will need train ticket from Tianjin to Shanghai for 2 pax.

Apart from the fast trains, there are also several high-speed trains operating from Tianjin to Shanghai. It just takes around 5hrs by the high-speed trains. About the ticket price and train schedules, you could make a search on the web. For the tickets, you can buy at Tianjin west or Tianjin south station after arrival or purchase them online in advance.