Had a really good experience here, which is impressive given it's like their first week. Decoration is impeccable, Butterbrew coffee is delicious. The place was busy but not crazy. The pastries looked good AND HUGE but I didn't see any Potter themed foodstuffs, they mightve sold them all. I would've bough them all myself.
They also seem to take their coffee very seriously, I saw brew selections I haven't seen since Seattle here, but many choices were sold out, probably because this place has more business than any infant coffee shop could expect.