We were aware some passengers had problems on this ship before. But we didn't take it seriously, since we've been on several cruises around the world, and suspected what kind of "vibration" people mentioned. It typical for some types of ships. If you travel more, you would know. Our 3 cabins were on a very back of the ship, on a Main deck, which gave us more privacy. We were very happy with our choice. That so-called "vibration" didn't bother us at all, we slept like babies. We enjoyed the service, food was excellent at the restaurant and pretty satisfied at the buffet. We didn't hear about anybody getting sick in there. We enjoyed art auctions and shopping. We didn't care about most of the activities, but we noticed it was plenty fir people who needed it. Staff was very helpful, even though we noticed many of those people worked 12- 14 hrs. per day and still smiled to us. The only thing we missed was a bigger pool; those 3 ones were too small in size. We would like to thank Carnival for such a good arrangements for check in and check out and for such a great time we had. We would remember this cruise as and would be happy to return again.