definitely quality work. can you give me some general specs? typical exposure length, ISO setting, aperture, camera, lens, ...
i'm a semi-professional B&W fine art photographer so don't take this the wrong way: you obviously have the technical side of these pictures, but i think you could improve these if you used a longer lens, a wider aperture, and a viewpoint that isn't as much lined-up with the tables. shortening the shutter speed (if possible) to bring someone's body or face into focus could really make a dynamite picture too.
keep snapping!