So what do you do?

Leaving Gdansk this morning, hungry and all they take in payment is Polish currency.  Foolishly I thought, European Union, means everyone everywhere takes the EURO,  WRONG!  So their credit card machine doesn't work and I am truly hungry.  Solution, go to Duty Free store buy pack of gum I won't chew and break a 50 EURO note into Polish change.  Catastrophe averted, hunger pains gone.