First, the DL resort is a lot smaller. Everything is within walking distance. Park hopping doesn't require taking a bus, car or monorail. The 2 park entrances are literally a few hundred yards from eachother as is Downtown Disney. Another difference--DL's castle is much smaller--it doesn't dominate the park like MK's does. Actually, considering the Matterhorn is right next to it, it looks perfect. A mountain should be bigger than a castle. If the castle were any bigger, the Matterhorn would look funny. When I went to MK, it of course reminded me of DL, but the forced perspective on Main Street was gone and many rides are in different places--I couldn't use my DL autopilot. DCA has a very similar feel to the Studios. DCA is still pretty new and the trees there haven't matured yet, so it tends to be a hotter park in the summer. One other difference--no matter what time of year you come, you'll need a sweatshirt in the evenings--once the sun goes down at DLR, it gets chilly fast.