Quote Originally Posted by rigormortis View Post
Can also set the whistle onto your hotbar, using it will toggle on/off the chocobo.
That's what I personally find easiest, I have the mount as the "-" key on the hotbar on every class so just press when I went to get on/off the mount.

It's a shame we can't just chat to NPCs from on the mounts, but using a hotkey has made that less of an issue for me.