never been there my self, but know many who have (some for years at a time). overall they all enjoyed it. you will probably be living in an area of the wealthy class if your wife is working for an american company, regards less if you think her salary is a lot or not. it will be more then the common citizens.
best piece of advice, use commen sense. don't go around acting american late at night in the wrong parts of town. basically anywhere you go in the world today there are those who don't like americans. have you ever been out of this country before? if not this will be a good cultural experinece for you (and even if you have been out of this country before). depending upon the ages of your kids they too can learn a lot about the culture down there and can use that experience through out their lives.