We are first time Cunard travelers (American) and we crossed on the eastbound April 16th sailing and then returned on the westbound May 4th crossing. My husband and I have been on other ships, Carnival (once and only once!), NCL and Holland America.
My review will be very different from the previous reviewer's thoughts...and we were on the same crossing!! It only goes to show that people, on the same ship, with different attitudes, can have totally different opinions.
In addition to my general review, I have also included what I hope will be some helpful information for future QM2 customers.