You folks who register your game immediately upon install may already know this, but I myself went until this very moment without registering my copy of Ambitions at the
official site. You simply go to my account, register a game, and input your product code. I don't know if registration not being mandatory is for only us folks who bought the game with direct2drive, but everyone should do this to get the most out of their purchase.
For Ambitions, The Ultimate Career bundle has a couple extra sculptures, inventions, and several hair styles to use as well as a dress.
For World Adventures, The Explorer's Loot bundle gives some new furniture and decor.
Glad they tossed in some little perks for us legit owners of the game.