Chtistmas market

Hi, we are going to visit the Christmas markets in Gyor with my family, I want to ask if you recommend something to try and what to avoid. It is clear to me that markets in larger cities tend to be a bit of a tourist trap, but I still like the atmosphere of Christmas markets and I have never been to any in your country. Is it possible to pay by card at all booths or is it better to have some cash with you?