Well, it will most likely involve taking both Latin and Ancient Greek. If you have any experience in either one, it shouldn’t be too difficult because you will be building off of prior knowledge, if not, then you’ll need to seriously apply yourself to learning the material (hell, I should spend more time studying, and my summer will probably be consumed with studying Latin and Greek). You’ll also have to take some classical culture classes, which should be rather interesting. So all in all, it’s a lot of translating, a lot of “sorry, I have Latin to do” kinds of excuses, and a lot of people asking “what do plan to do with that? Be a Priest?” Also, you’ll become a grammar Nazi, even more than an English major. I would say, if you love the classics, then you’ll love the major. If you don’t, well, I would reconsider because you need to really want to learn the material and spend the time doing it in order to be a Classical Languages major.
Best of Luck