I found
this, about downloads and Ambitions. Maybe it will help.
Also remember that things might need updating before they are compatible with Ambitions. Especially mods.
And since photography skill came with world adventures (correct me if I'm wrong), I don't think it's possible.
I have WA, and the photography skilling is, truthfully, more annoying than of any use.
I can't really understand what EA is thinking about, when the picture frame for the cell phone camera is so small you need the sim to stand almost at the end of the town to get a usable picture... The big WA camera is better, but I prefer doing photographing the usual way
(at least C-button photographing is upgraded to screen size capture and better resolution, since printscreen capture only makes my pictures black for some reason).