To See Harry Potter or Not To See

I'm not one of those people who is really debating whether to see the new Harry Potter movie. I will see it. The only problem is deciding when. My family is going tonight at the midnight movie. Well, everyone except Tucker who is spending the night at a friend's house and said friend lives in a family that doesn't believe dinosaurs existed, much less that something like Harry Potter could not be evil. He will have to wait to see the movie.
But Grace and Spencer are going with a group of friends who will dress up like Rita Skeeter, Snape and Hagrid and join in the raucous fun that is HP. These kids all grew up together. Not just my kids and their friends, but with Harry and his friends. They all got letters when they were 11 inviting them to Hogwarts. (We were the ultimate nerds.) They loved the books and have reread number six in anticipation of tonight's grand opening.
My husband will leave work at 11:30 and drive to the theater to meet them, and they won't be embarrassed to sit with their dad. It's like a family reunion with a lot more killing and dueling.
The problem is that I have to teach at 8 in the morning. So, if I stay up until three, no way am I getting up at my usual 5 a.m. That means no morning run, no morning writing on my novel. That means I'll be groggy and ineffective all day when I'm already behind on grading papers and I get another batch tomorrow. I also need to prepare for Thursday's class tomorrow. I don't know. I'm just overwhelmed with all of the work I have this quarter, even though I chant every day, only three more weeks. I'm teaching two five-week courses, which means we shove twice the work into half the time.
So is the 153 minutes of escape going to be worth the catch up for the rest of the week? On the other hand, I heard this might be the best one of the bunch. What to do, what to do...