It is advisable or worthwhile to go from Shanghai pudong airport to city centre and back?

About:Shanghai Pudong Airport Shuttle Bus
It is advisable or worthwhile to go from Shanghai pudong airport to city centre and back?
I arrive at the airport at 7 am but my tour group only arrive at 2.30 pm. I have 7 hours of free time. Is it worth going to city and back or is it better to stay and wait at the airport?

It’s a long time to be spent. Maybe you can go to the bund area and Yuyuan Garden for a walk, and then go back to the airport to meet your friends.

Is there a place at the pudong airport where I can keep my baggage if I decide to go to the bund and back to airport?

Yes, there are official luggage-left counters in the airport for your convenient. Just follow the clear signages and you can easily find one to leave ur luggage.

More info: private beijing airport transfer