By all accounts this is an interesting beginning. So much and yet, I suspect, so little happens in this the first chapter. Harry seems like a very interesting character, so like he was in DH and yet so... different; he's grown up (though his reaction to his sexuality suggests not completely) and knows a little more of the world. The individual reactions of the trio to Harry's sexuality were very believeable and imho were very canonical. I am eagerly awaiting more.