We have a diner that's sort of like that near here, though they have managed to stay reasonably good. This place is a diner/soda counter in an old pharmacy that's been around for at least as long as my parents can remember. They're pretty sure it opened in the late 30's/early 40's. It's still always packed, and most of the staff are reasonable, but there's still one older woman there who really needed to have retired a long time ago. Thankfully, though, the rest of the staff quietly make up for her reduced abilities these days. She's such a character though, that I think everybody, including customers, would want her to stick around just to chat even if she ever does retire.