[Spoilers White Night] Harry says please

I, like many of you, am on a reread of the series in preparation for the new book. Something I just noticed in White Night though. When Harry asks Marcone to help save people in the cave, he freely says 'Please' to Marcone.

This is pretty much contrasting with Marcone and Harry's earlier exchange over the phone, where Marcone is teasing Harry about saying Please, Pretty Please, etc.

Honestly, dunno if this is anything really noteworthy, but I just kinda liked this little detail.