If you can handle your luggage, i.e. one suitcase and a backpack or similar, transfer from Yokohama cruise terminal to a Tokyo hotel by public transportation is quite easy. We were there in October. Got off the ship, free shuttle to Yokohama train station. Bought two tickets (under $10.00). We made one transfer and then took a taxi to our hotel (around $12.00). People were very helpful and we always found someone who spoke some English. I was very impressed by Japan. Clean, organized, efficient. Good advice about learning a few key words in Japanese. It is very appreciated by the locals. I loved the custom of bowing instead of shaking hands. I was still bowing when I got home. Got some strange looks.