Clarification on 3 day pass

Hi there. I will be travelling to shanghai 6/3/14 - 9/3/14), hence it looks like a great idea for me to purchase the 3-DAY travell pass for CNY 45. can you please assist to futher clarify the following:

1. with this travel pass, i can travel to ALL the subways ie from Line 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 and 16?
Unlimited ie does not matter how many times i get in and off the trains?

2. is there a booth that i can buy the pass in PVG Airport, or better way is to by at Longyang Rd station?

thanks and look for you reply.