Thanks, that is all super helpful!

One more little question for now. What about paperwork? Will she have to fill in any forms on the plane or at the border?

I found the landing card on wikipedia:
http://en.wikipedia.org/wiki/File:Landing_Card_f.png

This looks simple enough and has Spanish, so no problem.

I'm more wondering if theres something a little more complicated that you have to sign that says: you don't have a criminal record, that you dont intend to stay in the country for longer than your stamp, that you aren't importing huge quantities of money, etc (like they have in the US).

cheers!
-d