Here is a map of the DLR. The number '1' represents a StarDinerz location. For example, the one behind Plaza Inn is Inn Between. The one by Main Kitchen under NOS is Westside Diner.
We aren't assigned to any particular one, it's just that where ever you are, you are generally closer to one of them and that's the one you would go to, if you don't use other Cast dining locations, like break room vending machines or roach coaches. For example, Village Haus has a Cast window right next to the guest pick-up counter and to the right of it. The only thing separating the CM guests from the real guests is a wall.
As for pictures of the various StarDinerz locations, I don't have any, but I can tell you they all look different, while maintaining key similarities. And for the most part, menus are the same as well, with additional rotating daily specials. And for the hell of it, here's the operating hours of each one:
06:00 - 23:00
DRC Cast Cafe
06:00 - 22:00
10:30 - Park closing
Monday - Friday
10:30 - 15:00
Sunday & Saturday
10:00 - 18:00 with Grab-n-Go options only
02:30 - one hour prior to park closing
10:30 - two hours prior to park closing
LocationOperating Hours06:00 - 20:0006:30 - 16:00
07:00 - 19:00
(17:00 when park closes at 18:00)