I recently found out about this website and really love reading over the message boards when I'm going out of town. I thought that I would share a great place with everybody. In Palm Beach Gardens there is a place called "Kevin's New York Deli." This place is really delicious. I've known the people who own it for years and you won't find a nicer family.
They have everything that you would expect from a deli in NYC. They have a tongue sandwich that is spectacular. You order and they bring you your food at any table you want to sit at. I recommend finding a table that overlooks the water.
The food is really a bargain. The sandwiches are enough for two people to share. Please check this place out in you're in the area and reply with how it was. Enjoy!