Don't forget, DCL includes all the soft drinks, don't know other cruise lines that do (or you have to buy a card) and they added gratuity to a can of coke zero on my last non DCL cruise. You can bring your own alcohol on board (we had stocked ourselves a nice cabinet coming on board, that something we have never seen on other lines) and you can bring new purchases onto the ship (like rum) and DCL doesn't confiscate it (like other cruise lines do) and they aren't pushy with the drink sales (like other karaoke or shows where the waiter keeps coming by asking 'what can I get you?') also
Castaway Cay, they include the food, ice cream, snorkeling (if you have your own mask), sports like vollyball, transportation, fresh fruit stand, dance parties and activities, child care, on and on. My husband and I decided that Castaway was like worth at least $100 excursion per person.
When you combine all that, your 'savings' starts to diminish a little bit. But do what you want to do. In Feb, we did 2 base WDW days, embarked on the Carn Dream, loved our ports but were definitely ready to get off the ship and did another hopping day after embarkation. Nothing says you have to cruise DCL with WDW. But when I came back home, I was SOOOO CRUISED OUT, I told my friend. Her immediate response? You are just Carnivaled out. She was right. The 3 days DCL was incredible fun to me.
Do you want to see the waiters have to keep doing the stupid 'shake shake shake' dances or do you want to see amazing Crush come and talk to you at your table, the next day eat at a palace, watch fireworks and a live action pirate adventure on the main deck, photo ops with the characters... Do you want to see cliche country western shows, or jugglers dropping stuff and laughing at themselves or do you want to see Pocahontas sing live, Lion King broadway segments, Tarzan swinging in a loin cloth, take your pic with Ariel and have her ask what color mermaid you are...someone stop me...
So pick what you like, but if you haven't tried a DCL, a 3 day is NOT A WASTE OF MONEY at ALL and will allow you to see what you think of Disney cruising... A WDW land and sea is my new very very favorite vacay...
I sound like a broken record...