At the party at President Snow’s they don’t tell us about them throwing up there food so they can eat more.
Katniss runs in to two women who are dressed like Peacekeepers, in the forest by the little house that she shared with her father. One of them was injured because the boots were too big. They introduce themselves as Twill and Bonnie. They know who she was, and they explained that they were traveling to District 13.
And this is the first time that Katniss finds out that it’s still there. Where in the movie she does not till the very end of the movie. Then they go in to the house and talk. Twill and Bonnie reveal that they came from District 8, where cloth is made and resources are super scarce. Katniss gives them some of her extra food. Bonnie reminds her of Rue. They tell Katniss that after the previous Games ended, a rebellion started there, but no one outside 8 knows about it. Twill was actually Bonnie's teacher before they both starting working at a uniform-making factory. Bonnie had been helping Twill hide two uniforms so Twill and her husband could escape from 8 and tell people in other districts what was going on there. They tell her all about the rebellion and how they used her media tour to help with it. They also tell her that the Media propaganda about district 13 being fake is based use the same footage over and over and over again they point out the Mockingjay in the corner of the film every time and Katniss searches to the news channels when she gets back home to look at for footage of that.
Source: http://www.andpop.com/2014/11/20/crucial-moments-catching-fire-remember-watching-mockingjay/, http://indulgy.ccio.co/J4/d2/zE/42255e1091486974e868af3e0e026261.jpg
Then also they don't mention the movie that kindness from her ankle from trying to get back into the district after hunting. They don't mention when Candace meets the tributes from district 11. Them telling Katniss that Rue's family is ok. One of the main similarities that they had was actually defiance in the book and the movie during the interview when Cinna made it to Katniss's wedding dress and make it to try her and turned her into a symbol of hope as the Mockingjay.
Then there way Peeta dropping the bum of Katniss being pregnant, but her did not tell them about them getting married back home, and then all the tributes holding hands at the end showing up at their one.