Half Poles are not automatically entitled to obtain a Polish passport,unless an application like that is made within 3 months ob the child's birth and if both parents are in agreement.
exactly. even if 100% PL but born outside one would have to jump some hoops besides coughing up a bunch of dough.
Something to investigate is whether you would be required to do the military service compulsory for Polish citizens.
if over the age of 18, i doubt it.