Hello, Alltaf,
I have no experience photographing celebrities, but had the same problem photographing birds in a recent trip, I wouldnt be able to remeber their names aftewards.
What I did was to photograph the tags with the birds name using the lower resolution I have in my camera to not use much memory, those tags will help me remember the names.
The sound recording seems a very neat idea, though, unfortunately my camera cant record voice.
I wish the best luck with your new born baby, seems like we will be looking at several different "celebrity" pictures in the next months to come... posted in Freedom of being on your own.
Too bad it didnt work out, but a good lesson to learn for the future.
Just as a sugestion, I think it makes more sense to make a partnership with another (or others) company who is already succesfull providing this kind of services, has already managed this problems, etc... posted in Removing prints