First part is right, second part is wrong.
Protestants are people of the book. Catholics are more people of tradition.
Partially correct. Catholics are people of tradition, both biblical and extra-biblical.
If you don't like it, don't go.
Kind of like, "if you don't like abortion, don't have one"?
The focus of the nativity should never be Mary. The real Mary would point to Jesus rather than some dispute that draws attention from Him. He's the reason for the season. Not Mary.
Catholics have never said that. But if you get your idea of Mary wrong, you can quite easily get your idea of Christ wrong.
Pray tell. How is that? Christ can certainly "stand alone" apart from His mother. It is more important that you know HIM.