Please try different lines. You might find you like some things better on different cruise lines. I was hesitant, at first, to try NCL, but have had great cruises since the first NCL cruise. I think demographics will play a big part of the experience. We still sail Carnival, but only if it's a group sail or to try a new ship. Once we branched out to different lines it enhanced our enjoyment of cruising. Kept things from getting stale. If we want to be around younger folks, we'll choose Carnival or NCL. For an older crowd we'll choose Celebrity or Princess. These aren't absolutes, but just general observations. We have NCL up next, but would like to try MSC again in the Spring.