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 :)
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!