Polish Hosting Etiquette - Who pays?

Hello, I have an etiquette question regarding hosting friends who are visiting from Poland (I live in the US). They will be staying with us and we will show them around town and we will go to a theme park. My question is - what is the Polish etiquette regarding who pays? Since they are staying with us, are we suppose to pay for everything: restaurants, the theme park, etc? I know that in Poland they are very hospitable, so I want to be equally hospitable (without braking the bank). Thank you for taking the time to reply to my question!

Of course not, 50-50 on everything, or you pay for theme park entrance, they pay for dinner etc.

I always do as they treat me in Poland.But do drive them around places even though gets expensive when going to NYC with tolls and parking though.But other things 50-50 is good.