Quote Originally Posted by Enkidoh View Post
(it is also a requirement for using mounts, as the chocobo license is an item purchased from the GC in company seals currency)
A minor quibble here, but there is no licence for chocobos (nor anything else I'm aware of) in this game. Licencing was a big deal in FF XII and Tactics, but not in XIV.

It is true, however, that you need to be in a Grand Company to get your chocobo itself, as your GC will issue him to you (in exchange for some GC seals). And that once they've done so is when the game will unlock the Mount system, so that you can then use not only your new chocobo, but also any other mounts you have (though there is no in-universe explanation of that feature unlock).