First cruise was Disney Dream October 2011. About twice as expensive as the same amount of time staying at the Contemporary Resort at WDW for the same amount of time but I found I couldn't relax after doing the lifeboat math. 16 lifeboats holding 150 people each (2400) for a vessel carrying 4000+. This probably goes without saying that its a risk you take but that thought in the back of my mind the whole time was unsettling. Even though I'm a private pilot and an aerospace engineer I still get antsy on commercial airliners - maybe I know too much about the industry.
Enjoy the ride up!