Just watched this one too Kathy (although not in a crowded theater - :) ) and I was quite disappointed after the last one in particular, which was pure eye candy and story telling. The reason I listen to Harry potter Audio books it is invisions the brilliant writting in my mind, and then see it play out on screen - this one was sadly missing the latter part.
I don't think I saw 15 minutes of CGI graphics, more puppetry and green screening than anything and the whole, this one loves that one, this one has a love potion stuff turned this into a pretty boring event. It had a few sad moments, but go back one show, watch that one and then compare - what a difference directing can make.
I honestly wished I liked it more. BTW, No way is Snake a bad guy - he may not be lovable (kind of like having hermit crabs for pets) but he obviously saved Dumbledorf from even worse fates - and of course, anything can happen in movies. Especially Dr. Who, where you are only as dead as WHEN you are, not where!