I had to leave Mickey's PhilharMagic Concert twice as a kid because I got too scared. Those flying instruments were too much for my young brain, no joke.
Only one - Bee Movie. It had nothing to do with the film itself; rather, I had an issue with another kid stealing my seat, and I had a total meltdown because I didn't get along with them. My dad was forced to drag me out of the theater and take me home. It was quite embarrassing.
What is a movie you really didn't want to watch but did anyway for some reason?