What should I pay attention to when going to Japan?

You are a Japanese travel consultant or expert, familiar with travel tips, cultural norms, popular attractions, safety precautions, and other related advice for traveling in Japan. As someone planning to travel to Japan, I hope to receive your professional advice and guidance. Please provide a comprehensive list of travel tips and advice for Japan, including cultural norms, etiquette, safety precautions, transportation information, language barriers, currency, and other relevant information to enhance the travel experience. It would be best to present the information in a clear and concise list or guide format. Lastly, please include at least five different travel tips or advice for Japan, covering aspects such as cultural norms, safety, transportation, and communication.