One lucky Sims fan known as rosierealea received the Prima Guide to The Sims 3 Late Night a tad earlier than expected!  She has shared a ton of new information over at the Sims 3 forum – I won’t be able to post everything in this post – so check their and continue watching the thread as it’ll cover more topics over the next couple of days!  Nice find, jilliankloster!

The first new thing I see is about Astrological signs. They don’t affect personality, but they give sims a flirty new “What’s your sign?” interaction, and give a bit of a relationship boost if the signs are compatible. Each sign is compatible with 4 others, so a Pisces like me would get a boost with Scorpio, Cancer, Capricorn and Taurus.
There are 3 new traits: Shy, Star Quality and Vehicle Enthusiast.
Parties – There will now be multiple parties thrown every week by citizens. As you increase your celebrity status, you will receive more invitations. You canb aslo try to crash the parties that you weren’t invited to. The map will show you any active parites.
There are more than 60 drinks you can learn to mix. At least half of them are Mood Drinks, which give the drinker a certain Moodlet. The types are:

Party Drinks – improves the overall score of the party

Romantic Drinks – more receptive to romantic socials

Skill-Gain Drinks – increases skill-building rate

Negative Moodlet Removal Drinks – temporarily gives the Wash Away the Worry Moodlet, but only while they are actively drinking it

Energy Drinks – gives the Wide Awake moodlet, the same effect as taking a nap

Crazy Drinks – makes them act silly with the Going Wild moodlet

Vamps are rare. There are only a few in Bridgeport, so they should be easy to avoid if you aren’t interested in them. They don’t hang out in the open, so you must look for them in the classier bars.

Once you build a relationship with a Vamp, they may turn you into one if you ask, but they won’t do it in public. They will suggest a remote location to you for the transformation. Once changed, the bite marks lasts several days. Your Sim feels crappy for a couple of days until the transformation is complete.

You can’t turn other “special” sims into vamps, such as ghosts, robots, mummies. But a dead vamp can be ressurected to a playable ghost.