Travelling with temporara sedere

hello,

I talking to one guy marriedd to a romanian girl , i was asking him if they let me travel to another eu country with my wife
he told me yes but dont go from airport because they dont know the law, it is better you travel by bus or by train .
can anybody tell me if it is true plz
thank you

Which country in EU?

we want to go to Hungary

go with your wife by road.