Nothing at DL is exactly like the MK, so ride as much as you can. Make sure you experience Indiana Jones, PotC, the original Tiki Room, the Matterhorn, Mr. Toad's Wild Ride, and the new Space Mountain. If you like dark rides, Pinocchio's Daring Journey (or Adventure...or whatever) and the Alice in Wonderland ride are fun; and take a ride around the Storybookland Canal Boats, too. Since the 50th celebration has contributed to huge crowds, you will need to spend AT LEAST an entire day at DL, and Fastpass your way around the park! Stay to watch the "Remember" fireworks show and Fantasmic.
As for DCA, make sure you ride California Screamin', Grizzly River Rapids (although Kali at AK is better), and the Monsters, Inc. ride. It's nice to compare their ToT to ours, too. You won't spend more than half a day in this park.
If you're planning to go to the DL resort for two days, plan on spending the majority of your time in DL, and about half a day in DCA. Also, have a clear plan when you get there, since DL is more compact and crowded than the MK.
Have fun, and enjoy the original park!
P.S. I think this thread is in the wrong forum. It'll probably be moved to the Disneyland category.