My wife has always organized our kids' birthdays, mostly by herself. This year, we were supposed to do something smaller, but in the end, it has resulted in 43 kids being invited. Maybe 10 of them are from our family; the rest are friends. Since my wife is extremely extroverted, she makes friends wherever she goes, and those friends have kids, which in turn leads to friendships with our kid.
I was curious: what are your kids' birthdays like?
Edit.: Wow, so many responses lol. Just to make it clear.
My wife organizes 99% of the party, as I'm not really into it, and she really likes it. My kid is at school right now; before, it was in daycare, so there are friends from daycare, school, the nearby playground, from the building we live in, my wife's friend, and sisters. She normally hires what we call here a "party entertainer" (don't know the name in English, sure), but they basically play with the kids, and the kids really loves.
she is inviting just one of the parents, so basically just our family will be here with both parents. All the other kids invited will be with just one of the parents. In the end, 90+ people.
Edit 2:
It's not for social media, guys lol, me and my wife are not active. I don't even have Instagram. We have held bday parties for him since the first year. Last year, it was around 30 kids invited, and he loved it. Has the "superhero certificate" he won in his living room. We hired party entertainers; we had a person entering as Flash, my kid was crazy happy, and so on. He has the "superhero certificate" in our living room.
This year will be similar. Basically is:
daycare friends (2-4 years he was at daycare)
school friends (from this year)
we go a lot to nearby playgrounds here, so he has some friends from there
we have friends from the building we live in, as we leave on an apartment
kids from family (my wife has a big family)
And my wife's friends' kids. (which he knows and likes to play with)
basically, that is the list. I said in other answers that my kid names every kid, but I would say around 90%. Just some exceptions that she invites to be polite
Most of the people go; the bday is 3 months from now, and for cost-saving, everything is already planned. My wife talked with a lot of the people already, and pings everybody 1 week before