Original Commentary
When I was designing the waitress' outfit, I was wondering if I should give her a uniform. Then I figured whatever place they're going to isn't that formal. She wears whatever she feels like. Including the apron, which is yellow instead of white - Isabel

Modern Commentary
Marla doesn't care about Kimberly eating or not, but she does care about only getting one meal's worth of tips on a two-person table - Terrence