Hi Marry,
You are very smart to build breaks into your itinerary! The Walt Disney World Resort is an amazing place full of possibilities, but it can be easy to overdo it. When I visited the parks with babies, I found breaks to be essential, yet I didn't always want to go back to our Resort hotel. There are many nooks and crannies throughout the parks with tables or benches, but one place stands out in my mind.
In Magic Kingdom park, one of my favorite escapes is
Tom Sawyer Island in Frontierland. At this attraction, your party will hop on a log raft to get to the island, but the rest is up to you! You can explore the trails of early America, relax on a rocking chair or enjoy a picnic lunch.
When on the island, it's hard to believe you are in a theme park at all! It truly is a lovely place to rest. You can stay as long as you like and when you are ready for more fun, just take a log raft back to Frontierland.
I hope your vacation is magical from start to finish. Please feel free to visit the Disney Parks Moms Panel with any other questions you have.
Happy planning!
Andrea U.