If I recall correctly, there were plenty of casual (I won't say Muggle because Ron wears them too) clothes in the first two movies. In fact, didn't the trio wear them when they went after Quirrell? 0wnz0red. Also, the second Quidditch match was important... in the book. The movie told a complete, coherent story that was engaging and enjoyable. The movie never dragged or got off track. Cuaron did a wonderful job directing, I think. The first scene with Harry and Uncle Vernon was great; it was supposed to be like a normal kid trying to... you know (I won't say, MJF will kill me) without getting caught... but instead it's a wizard doing magic. The camera shake added to the realism of the scene, I think. Cuaron knows how to direct kids. Everyone gave their best performance of the series, and it was due to the little touches. Hermione slapping Harry's hand away from the Time Turner, the high-fives in the Boggart scene, the way they reacted to Buckbeak. I also think that Cuaron did a masterful job lining the movie with the angst that made the book so compelling. I like the book. I like the movie. I didn't expect them to be the same, nor did I want them to be. I enjoy both for what they are.