What Da Funk?

It's the official Hogsmeade afterparty for Hogwarts Alumni after the big send-off at Platform 9 3/4. Hermione is in a wistful mood, and it's obvious that she'd rather be anywhere else, but she understands the importance of respecting one's RSVP more than most. Will angst prevail over propriety? Pairings: RW/PP, HG/SS, just so you're not surprised.