Heh, I love the developing relationships here, you write Neville/Hannah, Harry/Daphne, and Justin/Hermione quite well and realistically and I like how each relationship develops at its own pace. Harry & Daphne working things out between them has a very realistic feel and the two do seem to fill each other's weak points quite nicely (I doubt wizarding society is going to appreciate having to deal with such an energetic and competent team). Getting the message through to Hermione was amusing and it's good to see her depicted as sharp, but not all knowing. I do like how your depicting how Harry & Neville trained while totally fooling Dumbles. Finally, that bit with Ron was perfect for setting him down in his deserved place; I doubt the Weasleys are going to be too overjoyed about the marriages their youngest two make since the best choices have been removed by the Weasley's own choices.
The omakes were amusing; though Plan B was somewhat moreso than the other.