MallyJ - //I have to say andy-hughes that if I specifically asked people not to visit me in hospital and they did I would be very upset with that person, as evidently he/she had not taken a blind bit of notice of my wishes. That would indicate that the person was thinking about themselves and not about me. I did ask not to be visited and only one person ignored my wishes..... we are no longer friends!! //
I entirely take your point, but you have to consider that for every one like you - and indeed me - who says what they mean, and is happy for a request to be respected - there are dozens - especially of the older generation, who say one thing but actually mean another.
So - 'Please don't visit me ...' actually means 'I don't want to take up your time and put you to any trouble, but if you do come, I will be please to see you."
Yes its frustrating and confusing, but we work around it in order to make sure that the older generation are as happy as we can make them.