I loved the movie, but I will say that script probably could have used some revising. I don't think Trekkers need to have anything to do with it; we certainly weren't necessary to "save" it, but I agree that a lot of things happen because the story requires them to happen, not necessarily because it was the natural or logical course for events to take.
Kirk hiding under the bed, for example, is absurdly convenient. But you know what? The scene was funny, so it didn't really matter.
I definitely think the script was far from perfect, and the actual progression of the storyline was kind of choppy in places, but I don't think it was enough to take away from the enjoyment of it. The movie was so fun and exciting most of the time that it was easy to overlook the bad parts.
And yeah, some of the music was kinda lame. Especially the very beginning when the Narada shows up. It was like they were sitting around going, "Okay, we need some really generic bad guy music."