Mockingjay Part 1 is disappointing. Like 2/5 kind of disappointing. Be warned.
It has devolved into a predictable plot with no highs and lows, no action, no tension, no twist and basically nothing intriguing about the plot moving forward. Many of the things that happen are inconsequential. I had a lot of "so what" moments. That's just bad screenwriting for you.
I like the first two films though, but by comparison this one is really bad. And also, a movie should be able to stand on its own when watched alone from the series.
Don't waste your precious time. You can earn back your money, but you can't earn back your time.