1. If you take up the entire width of a sidewalk in order to photograph your fellow travelers, local people will cross right in front of your camera, giving you a free lesson in some colorful gestures and expressions.
2 For a memorable experience, crowd onto a New York City subway in the middle of rush hour, toting backpacks, camera cases and luggage on a stick. Babble as loudly as possible in your own language, laugh and squiggle around so that you are jostling people and block one or two doors and aisles. Some of the locals among the passengers might not appreciate your brand of exhuberance. In that case, we recommend that you practice using your gear as a shield and that you have a plan of quick escape.
3. While we’re on the subject of dress: don’t wear flip flops in Manhattan in July. The heat from the asphalt will turn your shoes to toasted marshmallows. Your feet will remind you of this experience for some time to come. Oh, and this will also brand you as a tourist, because New Yorkers know better than to wear flip flops in Manhattan in July.
4. You will never lack for tee shirts, overpriced electronics, miniature Statues of Liberty, and all kinds of souvenirs, along with plenty of friendly people eager to sell them to you.
5. If you stiff the wait staff in a restaurant on the tip, it will not be safe for you to show your face in that place again. Waiters have long memories.