Can anyone confirm that the reciprocity fee that US, Canadian and Austriailans must pay is only if you arrive by air? Had a hassle at the immigration in Uruguay by an Argentine official who demanded to see my receipt even tho I arrived 2 months ago and had obviously had to pay then. Had to pay $160 again because i left it in BA, thinking I didn't need it. I'll dispute this with Visa but I need to know if I'm right----only by air has to pay?