I reckon you might be too late! But like @edelritter says, call the estado civile (?) or send them an e-mail, through the link above.
Hi, do you want to get married „with an official document“ or „just/only“ by priest before God or something like that?Hi, we travel from Argentina, it is the only opportunity we have assistant at the festival. And we want to get married here. Is this dream possible?
I`d be there to take the picsI´m sure Powerwolf would appreciate , if the wedding took place right on the stage, while they are celebrating their holy mess.