The wife and I have been to the World many times and I have been there before more than she has. Among WDW, DL, and DLP I have been over 30 times. As much as I enjoyed it, my wife and I decided to try a brief land/sea option in 2013. We were two adults with no children and no idea what to expect. We had a great time seeing the shows, enjoying CC, and all of the great food.
We had such a great time we booked a quick trip while still on board with no parks and just did a three nighter. That gave us the opportunity to skip the shows and see Match Your Mate, go to trivia nights, and the like. It was too quick for us but enjoyable. As two adults, there was plenty for us to do. My daughters will be ten months old by the time our next trip rolls around and we are looking forward to the whole new experience. We will be hitting MK for one day just so I don't break my yearly streak of being in the parks. That being said though, I think cruising on DCL is the new way to go for us.
Going to the parks will be a must for my children as they grow up, however I feel that while DCL is expensive, you are getting a lot of value for the price. The decline of value per price in the parks is a topic of another discussion in another thread. Hope you can get on DCL and enjoy it!