I was there last Elul. They had kosher sandwiches and other stuff from a local store with a hechsher from a vaad hakashrus in Livingston or some similar place near EWR. There was a sign stating the name of the store, the phone number and the hechsher. I didn't know anything about the hechsher, so called the store, got the mashgiach, and he told me how they worked, etc. I recall that the turkey on the turkey sandwiches was Meal Mart. I don't remember the rest, but l'ma'aseh, when you get there, find the sign with information, call, and you should be able to get answers. B'te'avon!