Love / Should I bring gifts? - help with a Polish wedding [46]

Hello,
I am going to my cousin's wedding in Poland (my father was polish and came to england during the war).

I have been to one wedding before and just followed the english custom of taking the wedding gifts to the reception after the ceremony but, no-one else I saw had any gifts!

Obviously I was doing something wrong and my family would not say anything, this time I would like to get it right.

When shall I give the gifts to the married couple?

Thank you for your help