I think this is one area that causes a lot of problems and annoyance for guys just starting off in seduction, because too often beginners associate attention with attraction. Obviously the loud, high energy guy is going to draw attention to himself, especially initially, there is nothing you can do about that. The most important thing to do is not let that initial attention that he is drawing get to yourself, you must not try to outshine him or try harder than he is, that will only make you look uncomfortable, and will turn the process into a battle between you and the high energy entertainer, and 9/10 times he will win, leaving you worse for wear and looking like a loser.
What usually happens is, once the girl/girls notice how comfortable you are with the situation, how chill and unaffected you are they will be drawn towards you, and intrigued at how relaxed you are in such a position, which is a very rare thing. This is true confidence and will always pay off in the end. The attention they give the entertainer will be based off fun vibes, the attention they give you will be based on the sexual and intrigue.
Don't get me wrong, if the situation was just the girl/girls with this one loud party guy then they will continue having a good time with him, listening to his jokes etc all evening if they have to, because they do find him FUN, but if you are present in the situation doing your thing, showing your chill vibe, believe me, over time that will be noticed and become more powerful then some guy investing loads to make the girls laugh. Not to say you can't achieve results by being a loud, flash kinda guy, because you can, you will just have to work harder to highlight your sexual vibe.