I just don't know how to start. You, for all intents and purposes, are dead to the world. Stranded on a small, deserted island with a raft and your wits, you have only sand, trees, and rocks to look at. The movie itself, despite the grand scenery and the slow transformation of Hanks, is actually pretty simple. And at times, the movie drags a bit at the end and seems forced.
Hanks makes it look all so easy, other actors seem as hard as a coconut husk.