Cafes and sandwich shops in the US 
may provide a placard for your table
after you place your order.
When it is ready, a server will deliver it to your table.

At Le Jardin du Petit Palais Café, 
the placard appears quite charming in French.
I can only imagine how the French tsk-tsk
the crazy photographers.

Le Jardin du Petit Palais Café
Petit Palais
Avenue Winston Churchill
75008, Paris