I did not have a standing appointment each week at the same time and wouldn't have wanted that due to my schedule, but I always scheduled several sessions ahead so getting a typical appointment wasn't a problem.

In cases where I needed to get in sooner because I wasn't doing well, I would call and almost always was able to get in either that day or the next. My therapist purposefully left a couple open slots each day for handling those kinds of emergency sessions. On rare occasion I couldn't get in that quickly, and in those cases, all I had to do was ask for a phone call, and he'd get back to me that same day I called which usually filled the gap until I could physically get in.