The first time we were there, we only had 3 sit down meals, and I found for us, that was very stressful, we were stressing on what to eat, where to eat, and when to eat. We would end up eating at the same place in the parks.
So, the last two times we have gone we have gotten the dining plan,, and we LOVE LOVE it. We do one sit down a day, breakfast, lunch or dinner, and snack around that. If we do dinner, it is early (4-5), and we feed the kids breakfast in the room, or on the move, and we have snacks for lunch, and eat like pig at dinner, if we have a breakfast planned, we usually do a counter service for a later dinner. I love the break, and the wind down time, we don't leave the parks for naps, so for us it works. Our kids were 5, 4 and 2 last time, and it worked for us.
We also planned where we were eating with our day, if we had a meal at poly (dinner), it was a night we had nothing planned in a park. Chef mickey we did the monorail, and that was a great afternoon break for us (during
free dining, they offered lunch, which was amazing, we had the place, and the charcters to ourselves). We also ate at the grand floridian, but that was arrival night, so that worked out as well, we arrived, swam, and then ate and headed to bed early.
Have fun, planning dinners for me was just as much fun as being there!
Heidi