MP:Better you get here first and then judge for yourself the do's and don'ts..it ain't as bad as some people may make it out to be nor as good as others might. Most Americans I know love it here. Ok agreed the majority of the ones who do are Muslims, BUT all of em are converts and born and bred in America. And I do know quite a few non Muslim westerners love it here too and if not love at least like it quite a bit.
Don't sweat the small stuff.. focus on the bigger picture. All of us have in some form or another had a lil culture shock here and there but you gotta then concentrate on the positives.
As for the negatives, do everything in your ability to set things right and work in your favor.
On a lighter note you'll have to get used to not having much variety in terms of certain food items(I should get my head outta the fridge)
Ex: chocolates and peanut butter
But hey,with time you'll get used to it,find substitutes or simply learn to do without.
Cheers!