I can't believe it's 2024 and you still need to carry cash and credit cards, maybe this video was filmed in 2010 and re-uploaded, I don't know. Another most important thing, you must buy medical insurance when traveling in the United States, if you don't have insurance, you will see a doctor for 15 to 20 minutes and need to pay a bill of up to 2,000 US dollars. Don't walk around alone at night in the United States, don't go to places with few people, don't go to dark places, or don't come to the United States.