Thank you for the clarification.

And yes, this subject was brought up in my playdates (kind of worrying that even parent would sign for something like that too). I'm glad it was just my misunderstanding.

I have worked in an actual daycare centre here & I follow the same schedule & a lot of the same policies as well.
I'm glad you have this experience, personally I think many of us have left our "centre based" jobs, to operate and offer a more personalized and flexible service. Centres due to extra staff offer quiet activities for children that gave up their naps.

I do require that every child take at least a 30 minute rest so their bodies can recharge for the afternoon & rest of their day. This rest is not necessarily a nap, as I can’t force children to nap, but a 30 minute body break to relax.
You're right, they need to recharge or have a body break. It also happens with quiet activities or also books in a corner too. Anyway, your group is not there yet but I assume they will when they face that transition in the future.