I have decided to make a barbecue and invite my closest friends, my childhood friends and college friends, about twelve people in total. I would like to talk and have fun with all of them but as a single group of people, get them a little bit closer to each other. I have never been host of a party, and I do not know how to behave properly.
I have been on the other side of this situation, and it feels weird being so few people and not be together. Also I know that after alcohol flows through the blood and we sing some karaoke songs, things will be easier, but I still want some advice.
How can I deter people from splitting up into smaller groups and not make new friends? How should I react if I notice someone feels bored, isolated, etc?
My crush might join us, but she does not know anyone and is way younger than me. That's why have not invited her yet, I don't want to invite her to spend an awkward time.