Yes, it is helpful to read the book first or you won't understand some parts as well but you will get the movie. I saw it last night (i'm 32) and I was screaming worse than the teenagers in there. The cast was perfect (except Rosalie....I thought they could have done better). Bella was perfect and Jacob was so cute. The story line did go fast but I felt that it had to inorder to get the entire story in. I wouldn't mind you slowing it down and letting the movie take three hours, but that is because I love Twilight. I plan on buying it when it comes out and watching it over and over and over. Congratulations Stephanie!!! (By the way, I saw you in the diner)