What do Vampires do at night, besides studying, Membaca and playing the piano?

hunt

At night vampiers watch people sleep

haha, read breaking dawn!... and midnight sun. ^.^

Edward says in one of the buku how, even though he is much younger than Carlisle, he has almost as much knowledge. He spent his nights studying before he met Bella, while the other Vampires umm.. got intimate ;)