Pull
There’s no kind way to put it. Kids can be downright idiotic at times. They don’t mean to be, and we can forgive them for their irresponsible behavior, but man, even the most well-meaning kid can behave in extraordinarily bad ways. In the OP’s case, they were the naughty child, but to their credit, they were just learning how to read and follow instructions.
So, what does a kid who’s learning to read and follow instructions do when they come across a fire alarm with the words “PULL” written on it? That’s right, they ruin dinner for everyone at the restaurant.