What an amazing city, really didn't want to come home! Both my partner and I had a really great time even if she got a bit tired of popping into pharmacies to check out their shaving gear . I won't list what I did/what I'd recommend as a lot of the fun is finding out for yourself, all I'll say is that you should make sure you have a good look around Kazimierz and read about it's history, it was one of my favourite days exploring.
I wish I were you guys still to go there, you'll have a blast!