Well, I got to thinking about the local cottage hospital as well as the ambulance station (I know the staff unfortunately very well) and I don't ignore the fire station - (manned by people who have pagers) or the cop shop (manned 8 hours a day else go 18 miles to the nearest 24 hour place) so I ended up with the ambulance station and the local A&E that I personally would like to remember.
I understand advice about mince pies and booze so I have gone for two tins of assorted biscuits that I think may be better for the 3 shifts that day in these places.
Thank you all so much for your suggestions.