Two couples are traveling to Krakow in May. I know that in Poland they have their own currency. Do they accept Euros. We are staying 2 nights and during this time going to Auschwitz. How much money would you suggest we carry per couple to cover meals and miscellaneous expenses not covered by a credit card. Aside from the concentration camp, what other sites are worth while taking in during our 3 day visit. Thank you for your help. Jack Sponaes