Personal travel identification requirements.
Holland America Line highly recommends that all guests carry a passport that is valid for at least six months beyond the completion date of your travel. Having a passport will enable you to fly from the US to a foreign port in the event you miss your scheduled embarkation or to fly back to US if you need to disembark the ship.....
У кого какие мысли? Это все-таки рекомендация или они обязывают пассажира?