Really folks, this airport expansion is hardly about tourism "in general" but for a very small,select group who have their own aircraft. Always was.
Gov't invested some $$ in a local airline operation that. will probably run a few weekly flights from EIS to MIA.
I highly doubt you could fill an aircraft more than once a week out of the New York area, and I doubt we will be seeing the mainline operators getting involved. The supporting infrastructure isn't there and the killer will be the fuel costs and ground services.