Well, I have Polish wife and a 16 months child. She couldn't stand the heat in DR and we moved here, I work for Philips in Bialystok.
I understand the platano issue, but at least now Poland is Schengen, so if you drop by Germany or another EU country, you can buy them and get them into Poland without problems.
I know in Warsaw there are latin people and spanish, but they're normally college students in exchange or something similar. Of course, also the typical cuban teaching salsa or Bolivian playing flautes.