positive changes (just a few):
-A completely new city with high-rise buildings and apartments in
-the title says it all: a nightlife where you can celebrate by in bars, clubs, etc. the night
-U Trains
-New items such as hot tubs
-new clothing
-etc.
All in all, there is much to discover ... Neuses
Negatives:
I'm not sure if it has not yet again to do with the Update, in any case, it happens more often with me that who I leave the Building / Buy Menu, continues the music of this. This disappears Allerding only when you restart the game completely. Even the main menu runs this together with the actual (Main Menu) music on. In addition, my Sim is now several times lost in the elevator. That he is waiting as usual for the elevator, then shows the bubble above his head on the way, for any reason whatsoever, is blocked and if you then send the Sim in the elevator goes to this and after a few seconds he loses again his goal and in addition to the mood display an icon appears that it was dark and the room would not be ready. Then he can leave the elevator normal and then the story works normally again (annoying; loss of time).
Moreover (I am aware that the addon has nothing to do with) the bug was not resolved with the permanently bad mood after the last update, All thing can not be (as I noticed the date) with a bed (I like whiteness it is but it costs about 4000ยง believable; Late Night Update; one of the last) in this AddOn more or less correct, that the problem does not appear when the Sim is sleeping in the bed.
Despite the fact that once again a lot of bugs are system sold, it all worth buying this extension.
These were not all (positive) changes and not all negative aspects, but in any case with the most important.
MfG