Okay, so it's all over!
I do believe I saw just about every character in cosplay before the main event, including a super-deformed Snape.
Before the general commentary on the movie itself, a few observations. I'm not sure I'll ever want to do the midnight movie thing again - is it really worth it beyond not getting spoilers from your friends or something? I'd be hard pressed to find another movie I'll be willing to do this with. But, it's the last HP movie, this is an EVENT! We also saw the movie in 3D (it was all that was left, I swear!) and 3D, well, it's OVERRATED!
Seriously, do we really need entertainment to constantly poke us in the eye with flaming shrapnel and snapping dragons and such? At least I didn't develop a headache like after watching Monsters vs Aliens. Unfortunately the 3D train is not stopping anytime soon, as long as people want to see animated penguins sing and dance to old LL Cool J songs in THREE DEE!!! Also, apparently the 3 Musketeers is now venturing into steam punk territory. But, enough about the previews!
Anyone who is a true Harry Potter fan has read the books already and knows what's going to go down before you even see it. This particular part of the Potter story is the brutal Revenge of the Sith moment of the franchise. All I can say is that not a moment is wasted - it was as it turns out a good idea after all to break this last part into two halves so the final battle as all the time it needs to be fleshed out.
So, long story very short: Voldemort snagged the elder wand at the end of the last movie and is about to do horrible nasty things. The Potter crew are hunting down the Horcruxes and find out where the last ones are. Voldemort goes "Oh snap, they know my secret!" and goes about stopping them at Hogwarts where the big GIANT wizard battle royale will go down. Stuff explodes, people die and we learn plot-resolving points that tie the whole story together. Is that vague and spoiler-free enough for you?
So, after everything is over and the dust settles, the last fan fictions are written, the final internet reviewers go over it, and the last merchandise is grabbed from the discount bins, there's only one question left: When will the spin-offs, tie-ins and prequels rear their ugly heads?
A mind is like a parachute. It doesn't work if it's not open.