Actually, what we were told is that to do the dining plan with a split stay you will have to 1) have the package attached to you resort, then 2) buy at least a one day ticket attached to the 2nd resort. So, we're only doing dining plan for time at first resort.
OK This idea is way out of left field but how about staying at AKL for 2 nights and CR for 4 and only get the Dining plan for the CR leg. This is similar to what we did recently. We tried to save a little money by not eating TS for 2 days.