Hi Valley
The currency in Poland is the Zloty and you will be able to exchange Sterling into Polish Zloty when you are away. Another option is to use your bank card at cash machines over there. Rates are generally reasonable, although your home bank may well charge a commission.
I'll be very happy to tell you about excursions but can you let me know which of our Poland tours you are on (and the tour code, if you know it)?
Kind regards
Olly, your editor