Richard, forget about Carnival, they're smart enough to know that you do not fool around with success, and, they do not!
In fact, the only stupid decision they've ever made was to charge a 3% surcharge for Casino advances....they started this when they aquired Princess, who, stupidely, was charging 2%. Quite possibly it wasn't such a "dumb" decision since it's still in force!
Carnival allows their aquired ship companies to operate same as b/4 aquisition as long as they remain profitable.....and, that's the way it's been!
As an addendum, we cruised the Wind Surf once in the Bahamas in 2003.....it was a pleasure....the food and service were excellent, and, the rooms were very acceptable!