The extra popcorn and candy was always overpriced even in the 80s. That's why I never got any as a kid. Nothing has changed. Ticket prices have even pretty flat for a decade now.
If it's only a few times a year (or once every few years), then the expense shouldn't be worth complaining about. That truly is a special event.
My 7000mAh lasts 2 days most of the time.
That 10000mAh should go 3 days
Any parent on a budget, or who knows it's not good for kids to always get what they want.
The problem is your kids have the expectation now.
If you make it abundantly clear before you get to the theater, there won't be any snacks; Then when they complain, take them home. They'll know you're serous next time, and it won't be a problem.
I am single, yes. But that never stopped my parents from saying no. I never had movie theater popcorn until I was an adult. You're the parent. You're in charge.
Mines got a silicon carbon battery with 7000mA. It's very nice. Most days I don't get below 50%.
It is ridiculous. But the logic is the same. Which shows the flaw in the logic.