This sounds like such an exciting trip! I love to travel abroad but tend to get very nervous before trips, too. But really, half the fun of traveling is the adventure into the unknown! Here are a couple things I've learned over the years: You need more tops than bottoms. Really, a skirt and a pair of jeans should be enough bottoms for any trip! Rewear shamelessly, people really don't notice. And two pairs of shoes at most, including the ones you wear on the plane! Rolling your clothes instead of folding them really does save space in your luggage. Keep in mind that if you connect your cellphone to a wireless network, at your hotel or where ever, then it's free and won't use up your data. And just the fact that you are aware of the possibility of looking like a clueless American makes you much less susceptible. Now relax and enjoy!