If DH wants to see Cars Land, then getting to DCA and waiting for opening because it is sure to be super busy. And with two of the three attractions reported as having slow turn over rates (not a continual loading ride such as Nemo, Spaceship Earth or Pooh) the lines won't dissipate quickly either.
As a WDW regular, I would recommend Cars Land, Aladdin, and California Screamin' at DCA. Soarin', Muppet's 3-D and Toy Story Mania are identical to WDW versions. If you have time, Monsters' Inc, Tower of Terror and the Little Mermaid are fun.
For my first and one day at DL last year, I did Indiana Jones, the Tiki Room, it's a small world, Roger Rabbit, the Monorail, Pooh, Pirates of the Caribbean, Alice in Wonderland, Great Moments with Mr. Lincoln, the Jungle Cruise, Mr. Toad's Wild Ride, Peter Pan, Pinocchio, Sleeping Beauty Castle walk thru story, Snow White, Storybook Land boat ride, saw the parade, fireworks and Fantasmic. (I was traveling solo and had a little extra magic from a CM friend to get all of it done.)
I can't wait to finally go on DL's version of Space Mountain and the Matterhorn later this year.

