If you lose your wallet in Japan, it will come back to you, but in Viet Nam it won't. There are many individual travelers and group travelers in Japan, but that is why there are only group travelers in Viet Nam(safety) Night life, you can enjoy both Japan & Viet Nam but day time, Japan has so many places to see but Viet Nam only museums, tourist attractions...
If you lose your wallet in Japan, it will come back to you, but in Viet Nam it won't. There are many individual travelers and group travelers in Japan, but that is why there are only group travelers in Viet Nam(safety) Night life, you can enjoy both Japan & Viet Nam but day time, Japan has so many places to see but Viet Nam only museums, tourist attractions...