Agreed. One thing I really like about my current T is that he intentionally doesn't take on too many clients, so that if a client needs to come in for an emergency session or just wants an extra session that week, he can accommodate them. He's done this for me a few times, and I've really appreciated it. Ex-T and MC tend to have very full schedules (though ex-T did get me in for extra session once in a crisis, during a time when she was planning on doing paperwork).