There's a perfect spot for defusing toddler tantrums.
As you're exiting Toy Story Mania, there's a long path (which can be seen on the bottom right of the above photo) that is probably the most quiet area of the land. Because it's the exit of a ride, even though people will be walking through, it's unlikely people will be sticking around there beyond that. There are a few benches made from Andy's toys that make for perfect places to sit and calm a tantrum, or if your toddler needs to get their wiggles out, there's plenty of space and small "toys" dug into the dirt by Andy that they can climb around to get their energy out. It's also a great place to bring a baby taking a stroller nap, since there are benches for you to sit on.