Rocker panel, I would def. fix, under front bumper, I think you can skip, it'll get scraped soon enough. Basically, they need to pull the full part off and respray the entire piece. If that's the case, then the respray will show up on a paint depth measurement. (i'm not sure if you give a crap about that, but an anal 2nd hand buyer might in the future) Paint depth measurement is an easy tell-all way of finding out subsequent resprays of body panels.
Stuff like this happen all the time. Most of it is caught at the prep center. But if you took delivery and saw it, then likely it was damaged after the prep center inspection.
Read this, then you won't be able to sleep at night: