I could not find anything on 'The wedding' so I really don't know about that one.
He has sold the screenplay adaptions of 'True believer' and 'At first sight' however and IMDB shows 'True believer' as being in development. Currently it says the movie will be out in 2011 but that could change.
i think all of nicholas books are great and i want there to be more movies. The one i want to be made to a movie the most is true belive or the guardian
I only have to say that the Notebook was an extremely touching, deep book/movie to me. I think there will be a movie made from The Wedding, just not as...powerful as to say.