How to say Merry Christmas in Poland

Poland
Capital city:

Warsaw

National / Official language(s):

Polish

Other spoken language(s):

German (Neighboring country)
Slovak (Minority)
English (Big cities e.g. Warsaw, Cracow)

National / mainly used expression(s)

Polish
Wesołych świąt
Merry Xmas

How to say Merry Christmas in different countries (languages)

Other expressions and phrases in Poland