Here is a 7 minute video of Late Night, enjoy. It is, however in German, but it shows great game play.
http://www.youtube.com/watch?v=0hMHZ_ZCLzA&feature=player_embedded
Just want to introduce me with a translation. I am new here and I thought that would be a good start
Forgive me my english. My german is very well, but my english is only basic. But some translations tools helped
0:07: Get out of the everyday and on the piste. The new Sims 3 expansion pack Late Night is your VIP ticket to the trendiest locations and best clubs in town.
0:20: From now on your sims will mingle with the stars and starlets from bridgeport and throw themself into the party, where they surely will make one or two unexpecting acquaintance.
0:34: The new neighborhood Bridgeport is the perfect place for party addicted sims. Who prefers a more quiet place will find a modern and comfortable home in the suburban areas, provided the necessary small change.
0:49: Is your sim a real party animal, he will surely live in the center of the action and locate into a modern penthouse.
1:05: The local subway brings you in no time at all from A to B. Runs 24 hours and even is free. So you will never be late to a date again.
1:23: The downtown waits to be explored from your sim. Huge skyscrapers, bright neon panels, bars, clubs and exclusive shops make your sims life even more exciting.
1:40: In the high society clubs the stars walk in and out and your sim is in the middle. Watch out how your sim behaves when they are around. Maybe you can score while
spending a drink to everyone [did not find a good translation for that, when you spend everyone a drink in the club, how do you call that in english?]. Or you make your sim to the barkeeper. If you want to know the latest news from the stars, you will find no better place.
2:15: If you have a star as a friend, you could be on the guest list for the next VIP party. Without invitation, there is no way around the bouncer. But there are rumors, some are bribeable.
2:26: Does your sim has star quality? Whether as actor, director or band member, life as a star offers much advantages.
With more level of awareness [another stupid translation, with higher famous level... or so?] the bouncers recognize you and let you in.
3:06: When you get more and more famous, it will be more likely that sims from your neighborhood will recognize you, ask for an autograph or photos. Speaking of photos, to every star belongs the annoying paparazzis, who would do almost everything to get your photos from your private life to incite the next scandal.
3:35: If you match the taste of music from the adjacent owner with your band, it could happen that he donates your next buy or a discount to his service.
3:52: If your apartment gets to small for you, your star sim could enjoy himself in his luxury villa. From the pool to the new basement hobby room and your own butler all your sims wishes will be fulfilled.
4:12: The lively nightlife from Bridgeport is a magnet for nightactive vampires. Here they can e.g. work at night. Like all creatures of the night, vampires are only unwillingly exposed to the sunlight. And because vampires don't get sated from normal food, the many sims which are on the streets at night are just what a vampire is looking for.
4:41: If your sim has been biten, he transforms in a few days to a vampire. The external changes cannot be overlooked. But don't worry, vampire sims are nothing to be afraid of. In Bridgeport has nobody been biten unasked.
5:06: The life as a vampire has much advantages. So they learn faster as normal sims an can move themself faster. Look to it that your sim is not to long exposed to the sunlight. Keep garlic away from him take care that you have enough plasme. Think of it, vampirism is inheritable. But even if your child is a vampire it doesn't mean it hasn't go to school.
5:41: Vampire kids have to go, like every child, to school at day. However, the sunlight doesn't affect them at this age.
5:54: The Sims 3 expansion pack Late Night offers you numerous new ways to get the game more diversified. In build mode you have the possibility to place half-height walls, elevators and pools in an individual form. Build your own exclusive club, including bouncers and [don't know the translation]
the barrier. Edit the skyline of your neighborhood with new skyscrapers.
6:28: In buy mode you can buy new instruments. Whether drums, grand piano, contrabass or keyboard... from now on there are now limits for your sim during a jam session. And who knows, maybe your sims will discover their hidden musical talent. Let them start a band and make their hobby to their job.
6:57: Furthermore, there are for example new shuffle boards and arcade games [slots?]. A guarantor for even more fun in your sims everyday life. The create-a-sim has also been modified and offers your now more possibilities. Send your sim to the piste and let them explore the party mile of Bridgeport. Make them to celebrities and let them discover the world of the stars with the Sims 3 expansion pack Late Night on October the 28th [yeah, we get this two days later than you].
Hope it helps and I didn't put too much spelling errors into it.
And again: Hello, nice to be here