Thank you everyone. I have to do more research, but I am thinking that we arrive Monday morning. We will need to probably have a nap, and then expore Shanghai Monday evening, and all day Tuesday. Wednesday morning we plan to do a trip (possibly an overnight somewhere), returning thursday evening.
We will spend thursday evening in Shanghai. We will then spend Friday day/night out in the Quingpu district for the wedding, and head back to Shanghai downtown for Saturday and Sunday night.
I feel like you guys are saying that more than 2 days is plenty for Shanghai. Should we do 2 outside trips?