I am thinking of spending Christmas here and going to Paros on Tuesday or Wednesday of the Holidays' (week).
Magyaràzat a forditàshoz
It is not a word by word translation, I've used the meanings already established in English regarding the use of the words related to the Holidays, avoiding to repeat the word "Christmas" as well. "Μεινω" in Greek means "stay", used with the meaning "pass" in English.