Our appointment was at the Memory Clinic, not at home, but at our first appointment Mum went off with the nurse, whilst we were asked to complete a questionnaire about how Mum coped with everyday life -using the phone, cooking, etc. Then Mum came back to join us before we all went in to see the Consultant, who gave us the diagnosis. There followed appointments at regular intervals until the Aricept was up to full dose, and now we have just started 6 monthly appointments when the Dr does the MMSE test. It was all very relaxed and calm, and they were very good with Mum.
From my own experience people also believe I exaggerate Mum's problems, family included. They too, often see her in her good moments, and also because I don't want her to be embarassed, I tend to cover up for her before she gets into difficulty. So not only do they not believe she has AD, but they probably think I am an awful control freak! I wish you well with the assessment.