You never know! Take a look at my signature trip history and you'll see we
have stopped doing the parks in favor of cruising. Of course, it helps that
DCL has been out of Galveston recently and we live 30 minutes away!
Also, more than half of my cruises so far and also planned have been without kids (but then about 1/3 of my Disney trips were also kid-free). And my kids were already teenagers (13 & 16) when we started cruising and we put them in a separate room beside us, so we also had plentifully of couple time even on the family trips.
I'm totally hooked on Disney cruising and hope they are in New Orleans for 2015 as that's much better for us than Miami! I've pretty much ruled out all the Port Canaveral ones based on price as others have mentioned here. Miami looks like the "best value" for 2014 so that's where we'll be then.