Big or small?

In general I'm trying to avoid hard and fast rules (kids/no kids, vaccinations/masks, etc.) that would require me to police people, if that makes sense.

For example, I won't be banning kids, and I have a relative that plans to bring his family of five (self, spouse, ~10 year old, infant, and MIL). I'm not at all concerned, since the rest of my family will also be there, and they all know each other.

On the flipside, I have a friend with a ~10 year old and a teenager (old enough to drive). I'm hoping that she doesn't bring them (and realistically, I don't think she will), because there won't be many other kids there, let alone a decent amount in their age range, and they won't know anyone else. But if she asks, I won't tell her no.

Another example would be spouses/significant others. Our siblings are single so it wouldn't make sense for them to bring plus ones, since they will have such active roles in the wedding, which means they would leave their hypothetical date hanging, with no one to talk to. For the life of me I can't imagine they would, but I wouldn't make a stink about it if they did.

Maybe that's why I'm having this dilemma in the first place :-).

Quest List is now 50 -100 people

I believe in "wedding world", we are considered a small wedding. We are having 50 people.