Answer:
The answer is to be found in the last sentence.
Step-by-step explanation:
First the narrator describes a pleasant journey on a ship and then uses the sentence where she ( I imagine a woman, I don´t know why) talks about sleeping on the ship to express the most important thing about this journey: it brings her (or him) closer to America every minute. As a traveller myself (but not a tourist) I can understand very well the importance of travelling and enjoying yourself while shortening the distance to your goal.
The reason why I don´t like tourism is because travel is converted into mere displacement.