I think some major qualifying factors would be stuff like:
Do you have kids, or do you think you would have kids by the time you're ready to take the cruise?
How "adult" would you like your vacation to be? Would you like to be imbibing a good chunk of the time without frightening younger passengers? Would either of you want to gamble? (If you don't, you can factor in the fact that, for all the money you'd PROBABLY lose gambling, you can pay for a Disney Cruise.
)
What kind of amenities would the two of you want? With DCL, you have many optional activities, but if you're just looking for a more sedentary, lounge poolside with a book or nap type of cruise, you're spending a lot of money for options you'll never use.
Just some stuff to think about. BTW, the Travel Channel often repeats a special about the Disney Cruise Line. If you have a Tivo, you might want to set up a Wishlist under "Disney," then keep looking for the special until it's back on. If you don't have Tivo, make friends with someone who does, and have them do it for you. :lol: