I was going to suggest the Fun Card (same price as non-discounted one day admission, but gets you unlimited admission for the balance of 2012 and all of 2013) but for one day only, that's obviously not the best offer. Unless, of course, you are planning a second trip in 2013 after your March visit.
Is AAA still offering the admission tickets with free all day dining? I know there is a "Canadian offer" right now with those same features (regular priced ticket but dining plan is provided at no charge). If not, then I would say wait until after the holiday season to see what new promotions are extended to the general public.