It was purported to be a comedy, though practically none of the film was funny and like YOU ONLY LIVE TWICE, the plot was impossible to follow and bore no similarity to the book. While some of the characters were retained, the movie was an abysmal mess-a very high budget and confusing mess.
Sadly, in a few cases (such as YOU ONLY LIVE TWICE), about the only similarity between the books and the movies were the titles! In fact, the original CASINO ROYALE was a horrid film in practically every way except for the music. While some of the Bond films have been a lot of fun, most have practically nothing to do with the great Ian Fleming novels.
For many years, I have longed to see a James Bond series actually based on the books.