I have enjoyed all the Harry Potter movies before, but this was a snooze: there was nothing new in it. We have seen the catching the snitch game before, we have seen people waving their wands, we have seen the train traveling across the countryside before, and with much better photography.
In fact the photography was poor, the acting, apart from Malfoy, was predictable, the fire scene was Hollywood at its worst, and there was no sense of surprise. What happened?
What remained was a tender story of adolescent romance and frustration, which was well done. however, this is not enough to make the long film worthwhile.