So, the only data solution for a foreigner is still iPlus simdata, right? I will possibly be in Poland by New Year and really wonder what I'll be able to buy since 29th till 31st. Will be the dealer shops open in Warszawa and Krakow on that time?
And what's about SMS? You wrote here 'national SMS'. Is it common practice to add some extra price for outgoing international SMS in Poland?