To get you started.
1 not expensive
2 various pubs have sport on TV
3 There is a winter break... not sure when.
4 Leave early - get back late. check PKP website. Also, check Auschwitz web-site.
5 not much. Japanese Gardens... a waste of time in winter.
6 check Google / Yahoo weather... it's pretty accurate.
7 can't think of any
8 yes