My money says he doesn't make it out of Warsaw without getting the crap kicked out of him.
One of my best and oldest friends took his family to Poland as part of a European vacation. My friend is descended from Polish Jews, although several generations back. He does not speak Polish. His last name was Americanized and appears to be German, and he is married to a WASP so his kids don't look particularly Jewish either.
He was quite appalled by the every-day, low-level anti-semitism that he encountered in his travels. There were many small incidents of guides making dismissive comments about "the Jews", of people claiming that Poland was being run by crypto-Jews and other things of that sort. He is not the type to even mention his Jewish background for months at a time, so I don't think it was a case of hyper-sensativity on his part.
While I don't remember all the details I am sure that his overall impression is that Poland today has a significant percent of anti-semites.