Just dont expect things to take as long as they did in the books, especially in the Games themselves. For example, it doesnt take Katniss very long to find Peeta when hes in the river.
The aesthetic changes (like jacket color) werent something we focused on, but the changes werent really plot changes either since they didnt affect the overall story. But they were changes like making something happen quicker than it did in the book simply to save time. Though there were some scenes that actually happened a bit differently, like the bread scene (dont freak out) or the number of parachutes that Katniss receives.
Without giving anything away, we can say that this movie could potentially stand alone, but the very final scene definitely hints that something is coming.
there is something they add at the end of Rues death that really made me cry - Reaction in District 11. Heartbreaking.
On the question of whether pre-Game and Game is a 50-50 split - Hard to tell since I didnt have a watch and they took away our phones, but I think they spent a bit more time on the Games.
The tracker jacker scene was AWESOME. Both the CGI and just the way it was filmed. Fantastic scene. CGI overall was good not overly noticeable or distracting.
But no, no Gale in the Capitol or Peeta at the feast

And yes, a certain cat was definitely seen the film
The mutts looks really good, but you didnt really see them super close up and it was night time.
Yes, the score was perfect. Really added drama to a lot of scenes. No music from the soundtrack that we noticed was included in the film itself. And if it was, it wasnt a part of the song that had lyrics.
they showed a few tributes killing other tributes in violent/bloody ways, but didnt go over the top by being too gruesome. You definitely knew what was happening and the intensity of kids killing other kids.
Buttercup, yes. Lady is mentioned, but they dont tell the story.
On Glimmer's body - It looked great! Very close to what we imaged from the book.
On the Clove/Thresh scene - It was actually done a bit differently, but still intense. Isabelle Fuhrman was AWESOME as Clove. Very menacing and easy to hate. Her death was done very well, just not exactly the same as the book.
We definitely cringed a few times because of the violence, but overall it was shown in a way that wasnt too bloody or gruesome.
On Katniss buying the pin from the Hob - Right and then Prim gives it back to her before she leaves for the Games.
Yes, Rues death was perfect. Amandla and Jennifer both gave very emotional performances during that scene.
Many of the Tributes received little screen time, but we did see a lot of the careers, Foxface, Thresh and Rue, both at the training center and during the Games.
They showed quick clips of some of the Tributes interviews Glimmer, Rue and a couple others but the majority of the interview scenes were focused on Katniss and Peeta.
Lets just say the cave scene was awesome, and were all now in love with Josh Hutcherson.
Jackie had more screen time in the games than many of the Tributes, but we dont remember her having any lines. Still, she pulled off the sneaky Foxface very well.
Yes, Katniss burns her leg, gets the gash above her eye and loses her hearing in her hear (though that last one isnt really emphasized in the movie).