Yeah,easy!
But just for FF fan.
I mean it's easy if you have played some previous FF.
Many thing are alike among FFs.
Knowledge in old FF can be useful in a new one since there is some foundation for battle system: Element,Magic,God and many things.
But I think only the battle is easy because you learn alot already with old FF games.
Side quest may be hard(for example etting celestial weapon without attend any forum,without asking anyone)