^^^^ This! The three day curse! We plan two days on, one day off. It works great for us. Last summer, my kids were 5 and 6. They loved the off days just as much as the park days. We did a split stay at Bay Lake and Animal Kingdom Lodge. The first off day, the kids did a pirate cruise, we swam and went to Disney Springs. The next one, the kids did a bunch of those cultural activities at AKL, we swam until we were rained out, and played in the community hall some. These down days let us have more fun on our park days. 6 Park days, 71 miles, no stroller- no meltdowns or tears even. I really Attribute that to those days off. Others can probably go, go, go- but it worked for us!
Oh and yes, we have a pool in our backyard!