I believe the writers of the movie "Tristan and
Isoldt" made it different from the book "Tristan and
Iseult" is because the writers wanted to make the movie understandable to everyone. The book version is based off of Romeo and Juliet but gets to the point, but it still has the
Shakespearian vocabulary.
The writers of the movie probably thought "
If we make the movie exactly like the book, then some people who have never read Shakespear may not know what the characters are talking about. If we make the movie so that it still has Shakespear in it, but it is easy to understand, then the movie might get more credit. =)"
Another reason might be that the makers of the movie wanted to make it (the movie) more realistic than the book was. For instance, the book says that Tristan and
Iseult were sailing back from Ireland to Cornwall and after the trip they were very thirsty.
Iseult found a wine bottle that had a love potion in it. Tristan and
Iseult drank it then fell deeply in love.
In the movie, Tristan and
Iseult "
fell in love at first sight".
That is why I believe the writers of the movie made it different.
( Sorry if some names or words are misspelled. I
kant spel...<--- Just kidding! =) )