I used to have ex-bats. They will stand in the rain, not knowing what to do. They will lay eggs where they are standing, and may not have seen one before - they had cages with automatic egg removal. They may not eat most food, only pellets from a feeder. And they have to be put on the perch at night (you may find them roosting under the perch in the morning).
On the other hand, sometimes they settle very quickly, and eat worms, cabbages and things you didn't want them to get. They will soon learn to scratch around and dig up plants and make dust bath holes. They can be very tame, some of mine came indoors to explore. My cats were not impressed.
They are such fun, hope they soon settle in.