The Gladers have been there for two years.

The Gladers have been there for three years.

Pi is so hungry that he tries to eat Richard Parker's feces.

He doesn't.

A significant plotline in the book is the efforts of scientists at Corvallis, Oregon to use an artificially intelligent supercomputer to help rebuild society.

No mention of this in the book..but it drove much of the original story

Roy makes his comeback at 35 years old.

Robert Redford was 48 when the movie came out. He played both the 19 year old and 35 year old Roy.

Rick is married.

He is not.

There are a brother and sister among the group named Cheryl and Ash.

The brother and sister are named Mia and David.

Matt's wife is named Joanie.

Her name is Elizabeth.

Dudley and his mother are blonde heads.

Dudley and his mother hair is brown.

Louden's dad loans Carla money for minor surgery.

This does not happen.

On his 159th loop Kiriya stares at Rita when she arrives to watch his platoon punished with isometric pushups. Rita joins the Japanese soldiers and asks Kiriya why he is staring at her. When the exercise ends, he tells her the after-meal tea in Japan is free; she knows he is looping and sobs. She finds him on the battlefield and obtains permission from his SGT to borrow him. They kill many Mimics together as well as the server and backups, but the loop continues.

Cage finds Rita in her training area at the beginning of each loop and convinces her that he is looping. They fight together or evade combat during each loop trying to find a solution to the problem.