Friends and partners for sure.
Kids it's usually better if they don't attend. There are many tiny, delicate items and procedures taking place, it's not an environment well suited for bored, restless children. If you ask nicely and it's not a school day we have a wonderful helpful young woman available who offers baby sitting for a very reasonable fee so that you may enjoy your beauty service in peace and quiet! (this young woman is founder, Adrienne Furrie's, daughter!)