Poland is having an awesome time in the EU. Get all the subsidies and trade, and ignore the rules they don't like: not taking any immgrants, going against EU court of Justic, etc.
"The most up-to-date statistics (as of July 2016) show that in 2014 Poland received €17.436 billion from the EU whilst only contributing €3.526 billion. Poland also received nearly €2 billion more in EU funding than any other member state in 2013 (France being second highest). " https://en.wikipedia.org/wiki/Poland_in_the_European_Union