If the zones weren't all copy and paste I would say yeah it ruins immersion, BUT in any game you eventually see everything anyway and so transportation becomes a must. I can't tell you how many times I have run out of Anima and needed to walk a long way to my next destination and I just logged and called it a day. I think the Boat trip is to long and holds no fun or excitement. Now if they put special fish to catch or maybe some gil betting games etc it might be worth the long ride.