Re: Before 7:34pm.
Lois will arrive, likely with Clark in tow, and ready for some bonfire fun. She'll mingle, chat, drink, make some new friends. She's here to have fun with everyone!
Vanille will also show up because yay! Lots of new people to meet! She'll chat with everybody she meets and will have a few drinks.
Martha is there from start start, helping Clara get ready because that's what friends are for! She'll chat with anyone and everyone, although she does end up catching up with all of the other Companions and exchanging stories about their adventures with the Doctor's as well as their most recent trip to Rocky Horror.
Rinoa would have shown up as well, because she is all about meeting people and making connections. She probably didn't drink, though. That's not for her.