I was just in EWR and went to the ART lounge, some points:
1) No need to show a boarding pass.
2)Not all food is kosher,they have a fridge full of kosher food, tuna eggs fruit bagels and cake all are wrapped in plastic containers from Majestic catering in NJ under the supervision of Rabbi Teitz.
3) There are paper hot cups for coffee and plastic cutlery for the food
4) if You want CY milk all you have to do is ask for it there was a nice few bottles of goldenflow milk there.