Parents of toddlers — how do you handle bedtime when it’s still light outside at camp?

We’re planning our first camping trip with our toddler and I’m a bit nervous about bedtime. At home, we put them down around 7:30, but in the summer it doesn’t get dark until 9pm or later. I’m worried they’ll see the light and just… refuse to sleep.

For those of you who’ve done this, what’s your strategy? any gear recommendations or tricks that actually worked would be really appreciated!