Now if I can chime in, Dan... I'm just going to echo some of what's already been mentioned, and maybe something new. Let's see.
Get tatoos. Kitchen hands seem to think this is mandatory. (Okay, don't. Not serious.)
Someone mentioned write stuff down. Yeah, do it. Write stuff down, make diagrams - how certain things are plated, maybe how something else is organised - study it at home so you're quicker and know your stuff, stick your paper up where you can see it when you're busy and forget.
Sense of humour and music in the kitchen - will be excruciating. Be prepared for all manner of tastelessness. Plug your ears.
Knives - on the one hand, you might give the impression that you think you're pretty hot stuff if you bring your fancy knives. Unless you're already very fast and the constant wiping and care needed for your carbon is second nature, maybe use the house knives instead and keep sharpening rods around as they'll need them constantly. On the other hand, using the crap house knives will make your work more difficult. No good solution.
Ignore the servers. They're a bunch of ... y'know.
Make friends with the dishwashers. People dump on them, but they deserve respect. Also shows the kind of person you are too. The servers are to the cooks what the cooks are to the dishwashers.
The obvious: use any free moment to keep your section all tidy and organised, and refresh yourself on anything you might have forgotten or need to ask about.
Speak Spanish. Aren't half the kitchen hands in the US Spanish speakers?
As you're going to be there, more or less, just for fun and the experience, you might probably expect that the crew will imagine you're the type who watches the food network all the time and so thinks if you joined in it would be cool. Debatable whether working in a kitchen is actually cool, but you still might get the attitude: you're a wannabe. No surprise.
And now a controversial one: being very hygenic takes a lot of time. At home, I wash everything when I should and as I should, and probably more so, but that's not what I've always seen done in restaurants. Watch others and see if there's any sort of general standard - because it'll probably be individual too - and then be a bit cleaner yourself, but not too clean as that'll take up time and then people will think you're slow and useless and not care why. Or you could do what I did and would do, and just ignore them and still be clean anyway.