As corny as it is, there’s a lot of heart to 50 First Dates. But this happens more in spite of Adam Sandler than because of him. The heart comes from Drew Barrymore, really, and some of the supporting cast.
The worst sin of omission in Secret Window is the removal of the fact that Rainey had actually plagiarized in the past. In the story, this is critical because it is the source of Rainey’s guilt -– and arguably the reason for his success.