Oh you mean La Noscea/Vylbrand o.o I was all set to launch into a ramble about how Limsa Lominsa has two gates you can just walk straight out of, or even warp through if you've got all the aethernet nodes attuned >.>

Still, no to my knowledge there isn't a way to move between La Noscea and the mainland for free. It does make sense I guess given the only ways to do it are by ferry of some sort, but I'd certainly welcome a way to do it on foot. Especially if the developers got creative. Say, a landbridge that can only be crossed when the tide is out (or at least i much easier to cross then), or an undersea tunnel too small for anything but a little party of adventurers on foot.

Still, even if nothing changes I'm happy. There's something oddly special about a landmass being so totally cut off.