I feel like the quality of privacy and respect of people's personal space has been completely disintegrated. You can ask to take the picture. I will be so glad to take the picture and pose and look good for the picture.
Go on thinking that you don't need to be read and you'll find that it may become quite true: no one will feel the need tom read it because it is written for yourself alone and the public won't feel any impulse to gate crash such a private party.
