If you are creating your own invitations or are wanting a great font for other Free Download Friday projects you've seen on AWS (or you just like playing around with fonts like I do), here are two fonts I'm loving right now are from The League of Moveable Type.
Raleway by Matt McInerney
League Script #1 by Haley Fiege
Instructions for installing fonts:
Mac Users (If you don't have Font Book, I suggest you download it. It's free right here.)
Happy Planning and Weekend DIY-ing!