You are gentleman S.C.
I always make this offer and people are usually happy for my doing so. When done I always tell them that they now have a photo for their Christmas Card this year.
You had fun and did a good deed. It was a good day.
Zo'n cursus is ongetwijfeld interessant! Mooie foto, de aandacht gaat van rechts naar links, en vervolgens naar het midden de diepte in.
That seems a busy moment ! for you !