Improper sandwich-eating

I had to narc on a woman who was eating her sandwich on Prego's deli (17th and Corcoran) outside patio today. Why? From the bag she had, it was clear she'd bought it from the next-door Subway, rather than from Prego's. It was an easy thing to do, because her crimes were manifold: eating bad fast food, favoring a chain over a local business, and of course making free use of a patio that was only for Prego's customers. Plus I wanted her table, because it was in the shade. :) The owner was annoyed when I pointed the violator out, complaining to me that she pays $3,000 a year in tax for the outside table and then Subway customers sit there, but she opted against confrontation and let the Subway-eater finish her sandwich.