I don't know about the painters for the simple reason that they are in some sort of youth detention center. The explanation in dialogues is quite vague, maybe on purpose.
Python:
xav "This is a youth detention center for boys only."
xav "As you've probably noticed by now, nothing here resembles a prison neither internally nor outwardly. And this is also not what it supposed to be."
xav "It's more about helping young people who frequently come from broken families to get back on the right track again."
xav "That's why many are doing their high school graduation here or even start studying!"
So there are no guards and security but if it is a detention center, by definition, they are not free to go as pleased and/or I doubt that an authorised trip to the local table dance bar qualifies as re-education

(not to mention the age thing).
Anyway, I just wanted to point out a potential issue.
Whether they will be part of the "wild event" or not, I would not in general exclude that the painters will come back for another session. This time Sophia would be more at ease and expose a little bit more. And maybe during one of the pauses or because Xavier is called elsewhere she might get more close to the youngsters. And given there is also a path in which Sophia doesn't know about Ares being Aiden, he also might be around. If she knows, I guess the precondition that she will ask for is that Aiden leaves for real this time.