Sims 2 Freetime Question

[Cassie]

I've never used it despite having Freetime but I agree, it's a nice feature to chuck in. I'm sure a lot of people will be making good use of it. But you know when you choose a friend to grow up with you, do they like, come round to your Sims' home and grow up there? Or do they just grow up off-camera and next time you see them they're all grown up?