First thing, EOD, I hope you're doing the Royal Court. I didn't realize until now that I never said anything else about that 6 months ago or so. The wife wanted me to tell you then that the kids would love it. Sorry about that.
As for the OP, I would say the only thing better about the other cruise lines is the price, and the only thing worse about DCL is the price. We used to cruise a fair bit before we had kids. After kids, we thought we would give DCL a shot. We have now been on 6 Disney cruises with another coming up this fall and then more next year. It is everything a cruise should be and it's fun. I remember relaxing on the other lines, but I don't remember really having fun the way I do on Disney. The only thing I hope is for new itineraries with the new ships, since I'm spoiled and don't want to return to the other lines.