Yeah I started doing Chapter 13 last night, got about 90 minutes into it, it's not bad, really. Big departure from the rest of the game and maybe a bit drawn out, but I think it's a cool change of pace.
Finished the story. Fun game. Probably the most enjoyable time I've had with a FF game since FFX, despite obvious flaws. Liked the characters, combat was fun, the lore was good, the story was almost good, and will be good once they flesh it out a bit. Sadly the story is obviously what suffered the most from the game being rushed.
Overall, very happy with this game, and I look forward to seeing how good the game will be once they patch it and add in more cinematics and the like.