Reduced Shanghai maglev round trip fare with airline travel same day

1. We are flying into pudong airport on 4/22 and flying out on 4/23 I read that there is a reduced fare. What is the cost for the round trip ticket at reduced fare what do I need to show the ticket agent at the train? My documents are in English for Hainian airlines

2. Taking the maglev to the last stop. How far is yuyugarden by taxi. Can we get a taxi without speaking mandarin? We can show our hotel information?