The Interstellar Diner is a well-known eating establishment in the galaxy, Betty is well known there, and even Maximus I.Q. has been known to eat there on occasion.
Clone Betty 3 wreaked havoc in the Interstellar Diner, causing the Galactic Council to go up in arms and practically every law-enforcement agency in the universe being sent to pursue Betty. (The Trouble with Triplets)
Maximus was eating there with Minimus, when he was set up for the hidden camera show "Prank'd". (April Fools Overture)