So try to arrive on time, or even a little early. If you know that you will be arriving late, you should telephone ahead to let them know of the delay. If a business meeting takes place over a meal, expect the business discussions to begin after everyone has ordered their meal, sometimes as soon as everyone is seated. Socializing tends to occur after the business is concluded, not before. This is in contrast with the practice in many other countries, where the purpose of the meal is to socialize with and get to know each other before any business is discussed.
Many American companies have women in management positions.
So don't be surprised if the person who meets you is a woman, not a man. If you feel uncomfortable, focus on the business at hand and ignore the fact that she happens to be a woman. Do not, however, ask personal questions as you might with a male colleague. In particular, do not ask whether she is married or has children. Do not flirt with her, refer to body parts, ask her out on a date, or make suggestive or sexual remarks.