If you see me out and about and want to take a picture with me. It's cool almost all of the time.
This is when it's not (this is obviously not a complete list but use your best judgement)
1. When I'm at dinner. Just like you don't want to be interrupted when you sit down to a meal with friends and family neither do I. If you catch me coming into a restaurant or exiting after a meal that's totally fine and not a problem. But if I'm in a middle of a meal I'll ask you to wait until we've finished.
2. And this is the reason I'm writing this today. Do not ask to take a picture with me after you have "secretly" already taken numerous shots with your camera. Trust me you are not being subtle. I see you, that's why I'm turning away. Just ask I say "yes" almost every time.
Thanks for understanding.