Long story short, I saw The Last Song the other day.
Where to begin? I had no idea what the movie was all about, though the six or seven Sex and the City-related adverts beforehand gave an idea that this would not be my type of film. Then, the opening credits started, and I read the name "Miley Cyrus". After a sigh, I hoped that she would have a side role in the movie, and was casted just to bring a celebrity to it. But it turned out she had the main role. Already there, I knew what direction this was going to take.
The movie is far-too-many minutes of clichés being thrown at you in an alarming tempo. You can stop the movie after 15 minutes, because at that point, all characters have been introduced and the back story told, and you can figure out what happens the next one and a half hour with little to no effort (after said one and a half hour, it ends with a bunch of words going upwards on a black background).
The acting is okay-ish, I suppose. I didn't pay much attention to that, as with that premise for a movie (you've seen it before! Hundreds of times!), acting can't drag the viewer's experience up or down by any significant amount.
2/10, I think. I won't give it a 1, because that might tempt you to watch it yourself to see if it really is that bad.