How many people can participate per session?
Each session is really designed for one family unit.
I say that, knowing full well that the term "family" has so many beautiful and complex meanings.
What I'm thinking is parents, kids, pets, and maybe throw in grandparents for good measure.
You can certainly book multiple sessions in a row so that extended families can participate together. When you sign up on the "Doodle" sheet, just use a different email address for each 20 minute session.
Any questions, just give me a shout. ed@edcollierphotography.com