They can be very destructive. They will climb, chew, find every possible weakness quickly. Others here who've had them longer could probably tell some good stories. All I can say is, mine try the gate every time I come out and if I forget to lock it they make a beeline for the duck food, then the porch to see if they can get the feed cans open. Mine are pretty laid back, but I wouldn't trust them outside of their fortress. They get into trouble easily.
I'm not trying to be discouraging, just want you to be prepared and I have no idea how much you know about goats