Salad Bucket is where Francine and Roger go for lunch following their interview at the Second Best Western for an agent opening on the show Langley Dollar Listings in the episode of the same name, Noting it's where the other show agents eat lunch at. Roger is confident that he got the job, after having had sex with the producer and his assistant, as well as other cast members and even the doorknob.
However, it is Francine who is notified that she got the position, which causes Roger to smash through a wall in a fit of jealousy because he was unable to identify a window in a picture.