More from Gizmodo
Context for the first is obvious: that's Scrimgeour giving Harry the Snitch that Dumbledore left him in his will…gives you hope that they'll follow that through and show what he's supposed to do with it (spoiler-free enough?).
For the second, however, I'm at a loss. Harry and Remus argue in the book, but that's at Grimmauld Place IIRC with Ginny back at school. Maybe they've conflated that with the wedding? (Good to see Ginny getting some screen-time anyway, seeing as how it all ends up ;-)