If you like your sleep or rather avoid having a early breakfast then avoid EMH and MM.
The only attractions that are a must do during a EMH/MM are Peter Pan and Dumbo at
Disneyland, and Radiator Springs Racers at Disney California Adventure.
Other wise you can get there when the park regularly opens on either day and still do quite a bit. For example, the strategy by going Disneyland at regular opening on a EMH/MM Day at Disneyland should be.
8am-9am: Avoid Peter Pan, ride Dumbo, Alice in Wonderland, Matterhorn, and Casey Jr. You can come back later in the evening for the attractions you missed in Fantasyland. By 9am Fantasyland is packed.
9am-12pm: Now you have to decide which is more important to you... Toontown or the Jungle Cruise. For Toontown you head there at 9am at Toontown opening, ride Go Coaster, see Mickey, Minnie, Donald, and Goofy finish with Roger Rabbit. Get on the train from Toontown station to New Orleans Square station, grab a FP for Indiana Jones, ride Splash without FP, ride Mansion, grab FP for Thunder Mtn, use FP for Indy, ride Pirates, use FP for Thunder Mtn.,Grab a FP for Space Mtn have lunch. Save Jungle Cruise for later in the. evening, Tomorrowland after lunch.
For Jungle Cruise instead of Toontown. Grab a FP for Indy, ride Jungle, ride Splash, ride Mansion, grab FP for Thunder, use FP for Indy, ride Pirates, use FP for Thunder, Grab FP for Space, have lunch. Save Toontown for after 6pm as guests seem to be done in that area.
For DCA... Just head to Toy Story Mania first unless you really want to ride Radiator Springs Racers twice. You can Private Message me if you need help with that.
Brian