At the table:
Matt thinks a bit commercially in terms of story structure. He clearly tries to build the stories in a way that gives them a way to pay off for the benefit of the fans. He has discussed how the fans and audience influence his creative process at many points. It is one of the concerns that plays a part in the juggling act of his creative process - but he is so good at it, that when a move is commercially focused, he makes sure it is still earned in the game. And, most of the commercial payoff is also a huge payoff for his players as well.
Of the players, only Sam seems to be thinking about the audience when he makes game decisions. He does some things clearly to make it a better story. When he does so, he makes sure that it is earned by subsequent actions, but there are plenty of times he adds something to his characters to create a story for the fans that is a bit out of the blue... and he sometimes decides not to do things because the fans might find it less interesting (or so he believes) - he has commented on that approach a few times.
Laura, Ashley, Travis, Marisha ... they all trust Matt to take care of the story building. All they focus on is the game (for the most part). They occasionally get self conscious about doing things before an audience (well, not Laura), but for the most part they're just playing D&D and are immersed in Matt's world.
Liam is an interesting player. He tries a bit too hard at times to craft the story, whether it is for his character, or by stepping into situations that should not be about his characters (like Caleb did on the Yasha/Beau date night). However, I doubt this has anything to do with the audience. He'd be the same with no audience - he just enjoys being a part of such great stories.