At the moment, I have four Vampire "families".
The first one is located in Forgotten Hollow. It's a gang of vampires that doesn't shy away from feeding in front of witnesses. They have no jobs, instead they'll have to earn money by finding things, stealing things or just collect berries. Luckily, their lot is cheap. Their very prescence is a blight on the neighborhood, and a constant headache for Vlad, who wants a little more class from his brethren. They spend their days either asleep or hanging out a local bar. When night comes, it's time to wreak havoc.
The second one is an Eternal being. He walks through life watching the ages unfold, and is literally only there to see humanity, along with the occults and the extraterrestials develop. He cares very little about how it ends, just interested in the path. (he's essentially my starter Sim, sent into the world before I modify it)
The third one is a group of "healers". They have no jobs, and spend all their time home. Their payment comes from donors. For a tidy sum, they'll provide housing for anyone and anything, be it an elder, a chaotic kid or just an annoyance someone wanted to get rid of. In a nice cell, I mean room, the Sim in question will spend some relaxing days/years, free from all obligations, except when their hosts becomes hungry. These nice Vampires detest the outside world with all its people and that cursed burning orb in the sky, and prefer each other's company. They don't care about other Vampires, and if asked to house one, they'll give him or her the sunbathing treatment quickly, to save room for souls in need.
My fourth family is just one vampiress, the member of my main family. Living in Sulani, she's a scientist looking for knowledge more than anything. She's also an avid risktaker, and sun or not, she will join the others on their daily swimming in the ocean or whatever it is one does outside. As a result, she has to retreat to the coffin more than once during the day, but even with a few very close calls, she doesn't allow this to stop her. She usually times it so her energy is at an all time low before the sun goes down so she can go to sleep at the same time as her living friends. She's hesitant to bite people and feel extreme guilt afterwards. Luckily, most of the time her friends will offer if she just asks nicely enough. After a while, she'll live exclusively on plasma packs. And she will never manage to develop sun-resisting powers.
EDIT: And my vampire seem to have bugged out. Recovers energy at night while being awake, then suddenly the energy bar takes a dive to nearly draining itself completely, but still recovering. Just another little surprise?
EDIT 2: Bug was as temporary as it was unwelcome.