I'm almost positive that they are bringing back the world map. It will probably be a lot like the world map in Dragon Quest 8, I think.

I'm not too fond of the time limit, but it's no biggie. They just don't want you to ride the chocobo too much. What I wonder is how monsters react to chocobos. Like for instance, will there be monsters that can attack chocobos? Like, a chocobo eater you have to avoid? That would be scary O_O. Imagine traveling around and then a chocobo eater grabs your chocobo and tried to eat it while you're riding it.