Changes

Easy ... Take minibus (so called marshrutka) from main post office (corner of STAROWISLNA and WESTERPLATTE streets) to WIELICZKA (2,5 PLN ~ 0,7 EUR) and ask driver to let you out at the end of the city (the place where already Wieliczka starts...). There is a bus stop and plenty of space to stop even a truck. Look at the picture below.