We already know that the instant travel is temporary as it was confirmed multiple times and that further down the line we might get the choice to either fast travel or actually ride the airship for events/quests etc.

In this rep response he just confirms that this will apply to boat ride as well as Chinook told us above:

http://goo.gl/uxgD8

Quote Originally Posted by Youmukon View Post
Il est aussi prévu d'implémenter le même système pour le bateau

It is planned to implement the same system to the boat