Board Thread:General Discussion/@comment-10745887-20141118000945/@comment-24674051-20150910134301

I think, also, that the depiction of the curse as a large cloud implies that it affects everywhere it touches, and probably no where else.

We know Hook was able to outrun Snow's curse, and also Ariel and Eric were outside of it's influence on Hangman's Island. So there is a limit to what the curse can affect.

Also, while last we saw Jefferson was as a prisoner in Wonderland, it is quite possible that he escaped after Cora went back to the EF. In fact (and I think I posted this elsewhere) it is quite possible that Will Scarlet (AKA the Knave of Hearts) found a way to help Jefferson escape, but got stuck in the EF in the process. and this would have been close to the time of the original curse.

Sorry, got sidetracked. The point is that Arendelle is outside the influence of the curse, at least when cast from the vicinity of Regina's castle. Possibly Camelot and Agrabah are outside as well, but that's a topic for another thread, if it ever becomes relevant.