I enjoyed this story.
I liked the description of the Quidditch camp (reminds me of Redefining Summer) and the trip to Greece.
It was hillarious when I realized that Luna's Prophecy was about a Quidditch game.
Dumbledore once again turned into a control freak, willing to imprison his former spy because he isn't going to teach Potions anymore. Glad to see Harry putting the old grudges aside to help Snape. In fact, it's much worse revenge for Snape - once again he was saved by POTTER.
P.S. Too bad the sequel, 'Time to Learn' was abandoned.