Oh don't worry.
If you need to stop that, your 10 year old will tell you.
But please don't worry.
You are a Mom. Don't have to feel awkward about how you "prep" your kid.
My daughter is 10.
She thinks like me.
But I still "prep" her if it is somewhere she's never been, nor I.
But she also knows how to speak up etc.
But hey, don't worry about your doing this.
Sure, some parents just let their kids loose.
So what. You aren't them.
They aren't you.
Tossing a registration at the Director is real rude anyway.
Kids observe things like that too.
Even my daughter will say how some parents have no manners and they don't even follow directions.
You're okay.
Don't worry.
Each kid is different.
You know your kid.
Fine.
And as you said, this is kinda like your way of "connecting" with him.
Don't feel bad about it.
But YES, as kids get older, and they are at venues for kids, then there WILL be other adults with them, that are NOT their parents. These adults are the groups/organizations, "Leaders" or supervisors etc.
This is normal. It doesn't matter if a parent is working full time or is a SAHM.