Not when the sign told them how to get there!
Here’s how you can get there.
And here’s when you’ll be able to get in there!

So this was why they didn’t have a hard time getting to the teen area. Here it is!

Even here they had to get up to no good. I think someone needs to teach them how to behave in a library! Are you supposed to climb up the bookshelves?

I think they need a time out.

Unfortunately, by the time they got out of time out, it was time to wait for the box to pick them up.