You will find that this is the most "controversial" (for lack of a better word) character meal in the world....it gets LOTS of bad reviews, though many others just love it.
I would definitely recommend going to Deb's site to read the reviews there as well those here (
www.allearsnet.com). BTW, she also has ALL of the menus for EVERY restuarant at WDW posted there, so this is a great site for planning your meals.
My two cents...Donald's Breakfastasaurus is the only thin in all of WDW that is on my "never again" list. FOOD WAS AWFUL. Service, though friendly, was terrible, and so on. I won't go into detail here, as I have written reviews elsewhere, but if this is a first character meal for you, I would recommend Chef Mickey's--tons of energy there. And CP has amazing food, plus great energy as well. Donald's is a more "plain" type of character meal...no chanting and napking waving or parade around the restaurant, etc. However, if you are going for the reason of getting into AK early, then yes, this is a good plan.