I refuse to go and watch this at the cinema, or even to buy the DVD...... UNTIL the second half is available. I remember watching the Lord of the Rings and feeling really empty as the first film ended and I had to wait months to see the next instalment.
Having read Harry Potter I know the endings, so watching half a film right now would be like eating the roast beef, but waiting 6 months for the spuds and yorkshire pud!