So I thought this was cute, but at the same time I want to put in my $0.02 for promoting consent culture. If you would like to hug someone, especially someone that you don't know very well, and you're not sure whether it's okay or if it's the right time to do so -- just ask them! You can do this verbally (my preferred method) or you can do it non-verbally. Give the other person the opportunity to decline and be gracious if they do so.
The panel where the narrator is being grabbed and lifted off her feet by someone just made me wince. I've been hugged and had my hair touched by people I did not want touching me because they did not ask, offer, or otherwise give me a way to say no. (And since I"m a pretty small person, most people can come up and hug me and I really can't keep it from happening. It doesn't help that I present as femme.)
When someone I don't know touches me without my permission, it makes me feel like an object, not a person. Hugging can be a great greeting, just make sure that everyone is on board before you go glomping them.