Cruise. All Disney with luxury. Princess & other Disney character M&G, amazing food, movies, shows, Pirate Night, fireworks (yes fireworks, on a ship), largest staterooms of any cruise line (unless you decide to do one of the very expensive deluxe cruises), etc., etc. Disney has several clubs for kids ranging from infants to teens - I believe the teens have their own pool. Other than the nursery (6 months to 3 years old), the clubs are included in your cruise cost. There is an adult only section on the boat with its own pool. In addition, there are adults only restaurants on all 4 ships - an upcharge fee is required. We've eaten at both Remy and Palo and we still talk about Remy!
Plus Castaway Cay - snorkeling, biking, floats, lots of "excursions" and you never leave the island. Great family beach. And an adult only beach. Lunch is provided on the island at no charge. The only thing you need to bring on the island besides your sunblock is your Key to the World card and ID to get off and back on the ship - Disney provides beach towels which you can grab when you walk off the ship. Alcohol is a separate purchase but there are CMs constantly walking around the beach to bring you whatever your favorite beverage is.
Our first Disney cruise, we bought the excursion that included snorkeling (unlimited), floats (unlimited) and 1 hour bike ride. If I remember correctly, it was about $30 per person.
While we enjoy going to WDW, we love, love, love Disney cruises - we try to do 2-3 every year. We just did one of the Halloween on the High Seas cruises two weeks ago, just before the hurricane, fortunately. Trick or treating, costume parties (for adults and kids), the ship was decorated for Halloween. Below is a picture of the Halloween tree in the ship's atrium.
Next year, we are doing one of the Star Wars cruises. My daughter and son-in-law did one this year for their honeymoon and they said it was amazing. Stormtroopers were guarding the main pool.
Talk to one of the travel agents at Kingdom Konsultants (calling Belle) - they can give you all the info about a Disney cruise. I highly recommend a Disney cruise - I think you will enjoy it.