回复：请教关于游轮, 多谢

You can get cruise related information from:
http://www.cruisemates.com/reviews/

For question 3, in mid of ship is the best;
For question 4, maybe you can get it from costco, i.e. costcotravel.com, or cruise.com, to me, price wise, these two web site are the same, but I prefer costco's service.