Being brutally honest, I wouldn't be too keen to attend a party from someone that writes up about their 21 party facts lol. This sounds more like a meticulous plan to maximize human socialization than an actually just fun party :)

I am reminded of an episode of SpongeBob SquarePants where he meticulously plans a party with a huge list of scheduled, mandatory activities, and hovers around guests and tries to direct them on how to talk to each other and have fun. No one has fun until he leaves to perform errands and then gets locked out of his house. I wonder how much of that episode's plot was intended as a morality tale for children, and it's funny to consider that children's cartoon animators may have wide discretion to create stories meant to instruct kids on issues the animators have personally experienced. It's funny to imagine someone like Stephen Hillenburg or Derek Drymon or another writer going to a party that wasn't very fun and then saying "we need to let the future generation know that they shouldn't be too authoritarian about their parties", haha.

Casual hangs are definitely fun, but there's also a lot of fun to being at a bigger "party" or "event."

It's everything from the organization of the space and the flow of people during the night, to the mix of invitees, to possibly having some kind of gimmick there for people to connect over and for the shy people who need some social lubricant (like palm readers, a caricature artist, etc), to the music, to the decor, to the food, to people hired to help pass out the food, to the theme / dress, to the interlude that brings people together (like a vote / contest)...

When done well, it looks effortless, and it can be really fun to attend!

Best comment.