A step back in time. Don't get waiter service, but wait in a sandwich line. Watching the pastrami get sliced, being given a huge slice to taste, getting the plate of sour pickles (and don't forget the sour tomatoes ) is an experience from old NYC. You are given a ticket when you walk in. That is where your purchases are listed. Even if you don't have a purchase you need the ticket to leave!
Sandwiches are NY HUGE, knoblewurst (a type of hot dog) is a treat. Don't forget the corned beef, too. A NYC must!!! And I grew up in NYC and find this a treat.