Yes. Hypnosis is the ideal intervention for treating PTSD, as PTSD is actually a trance state. I would expect a sufferer to experience noticeable relief within 1 session.
You are always welcome to bring someone to support you. Particularly if you are anxious or nervous.
I am happy to run group sessions for many treatments, it could work well.
There maybe a variety of reasons for this, but the most common is lack of rapport. You need to feel comfortable and understood by the therapist in order to be able to relax enough to enter trance successfully. If this has been your experience, please feel free to call and ask any questions, I'm happy to explain why you may not previously had the results desired.
I do some evening sessions, usually the latest appointment is 6pm.
This is not usually a problem, I generally leave space between clients to allow for this.
You can park anywhere there is a space, there are no restrictions.