I didn't really read the reviews before we went, because I figure it's better in most cases if you can manage not to be spoiled. I read reviews of movies I'm not sure if I want to see, not the ones that I do. Skyfall would normally have been one of "unsure" ones, except for the aforementioned Twitter mini-reviews, which mostly were entirely non-spoilery things like "AWESOME!!" It was the sheer volume of those that caught my eye - nearly everybody on my Twitter list had things like that to say about it. So I decided I wanted to go, and I told Rob that if he would go with me to Skyfall on Thanksgiving Day that I would go with him to Lincoln on Sunday. (Which was not exactly a compromise, quite honestly, since I wanted to see that too. But it was enough to get him to cooperate, anyway!) I didn't read reviews of Lincoln, either, and I didn't actually realize what it's about - I think I expected more of a general Lincoln biopic than it actually was. But I like politics, and that's really what it was about, so I enjoyed it.
Now I am a little bit of a Civil War buff. Back in the early 90s when the Ken Burns thing came out, and then the Gettysburg movie, I got interested enough to wade through all three of the Shelby Foote books - which I highly recommend, if you're interested, but you need to be really interested. (A far lesser bar, if you're interested but not interested enough to put yourself in for a couple of thousand pages, is Foote's Shiloh novel. Or even better, the Michael Shaara novel that Gettysburg was based on, The Killer Angels. They are both extremely readable, without requiring any particular knowledge of the subject.) Then after Foote, I read an awful lot of other Civil War books as well - I actually considered going back to school to study this stuff, at one point. The only real tangible evidence of all my acquired knowledge is this little mini-summary of the first part of the war, which I still think is pretty good for something I wrote off the top of my head one night. (The reason there's no part 2 was largely because the war in 1863 gets a lot more complicated and got beyond the scope of what I could write without doing research.) So all this is by way of saying that I know a lot about Lincoln, in general. But I honestly didn't know much about the fight to pass the 13th amendment, and I enjoyed it. (I know, I keep saying that. But I did.) I don't know how much you'll enjoy this movie if this is not a subject that interests you, but it's another well-made movie, and the packed house we saw it with seemed to really enjoy it, too. And they surely can't all be Civil War buffs.