What is the night life like and such and is it hard to arrange day trips to places such as Auschwitz and the salt mines?
The thread that SeanBM, provided is a good over view of Zakopane. Having travelled to Zakopane and Krakow many times. I would suggest, you do the trips to Auschwitz and the salt mines at the end of your stay. Going to Auschwitz is a heavy trip and is not for the faint hearted. If you had an over night stay in Krakow at the end of your journey, you could do Ausch-Birk, Salt mines, Wawel, Schindlers factory, Krakow stare miasto and Kazmierz over two full days. There are a lot of inexpensive hostels in Krakow, that you can book by the night.
There is plenty to occupy you in Zakopane and the surrounding areas for the rest of the stay.