My nephew had a Scottish girlfriend ones and he invited her home for Wigilia. The gf came dressed in tee shirt and old jeans and said "oh, I'm not hungry, I just stopped on my way at MacDonald's". Well, she is history now!
It looks like her boyfriend (your nephew) wanted to finish the relationship..or he was so stupid not to discuss with her the Wigilia
formality and exposed her to people..like you!ekcamposekcampos
People in Poland would love you for your nice and such an open smile, that's for sure!
Just be yourself, that's what counts! Don't try to be a Polish....you have a time to learn things about the culture!
I wish you well- you both look amazing!:)