Had my iPhone XS display replaced as it was faulty (stuck pixels). My phone had no physical damage at all, not even a scratch as it was kept in a case/screen protector it’s entire lifetime. It looked brand new.
The Apple store staff even noted ‘no marks’ when they recorded the physical condition and complimented it.
After they had worked on my device, the enclosure/sides have come back scuffed and scratched in several places. They even left glue on the screen. It’s fairly minor damage overall, but I am devastated that my device that I look such great care of has been damaged in their possession. Aibu to complain? I don’t want to get fobbed off if they think it’s too minor to replace.