Jason was used to parties filled with people that he didn't know—it was kind of a thing that happened when you were one of Bruce Wayne's wards. Things were made a little easier by the fact that Robin was around, too, but he still decided early on that he wasn't going to stay too long. It just felt weird when he didn't have to be there.

Despite this, though, Jason is polite! And friendly! He even made an effort to dress up a little nicer. He'd find the nice lady who invited them and make sure to thank her, compliment the food, say hey to the few he did know (and get to know the ones he didn't—this was part of why he decided to come, after all), even thank everyone just for letting them hang around. He's pretty amicable for a kid who didn't even plan to stay the whole evening, but his gratitude is genuine.