Hi Emily! I LOVE this question! To answer it, I sought input from my resident "expert," my 9 year old son.
He loves what you have done in the past and offers the following suggestions:
Disney Springs
A must do in Disney Springs is to stop by The LEGO® Store. When you are finished shopping, your boys might enjoy a meal at Rainforest Cafe.
Magic Kingdom
On our last visit to Walt Disney World Resort, we discovered
A Pirate's Adventure ~ Treasures of the Seven Seas. It was so fun and my son loved it! You go on an interactive adventure around Adventureland using your MagicBand to uncover treasures.
Epcot
In the past, as we exited an attraction, we spent little to no time enjoying the areas after we had disembarked. We missed out on so much. Then - we became parents and our kiddos introduced us to a whole new world! Project Tomorrow: Inventing the Wonders of the Future is a perfect example. Following your journey through Spaceship Earth, you will find an interactive area with fantastic games and activities.
Disney's Hollywood Studios
Toy Story Land is opening on June 30, 2018. Be sure you include it in your itinerary! My son is most looking forward to experiencing Slinky Dog Dash and Woody's Lunch Box looks like a fun place to grab a quick service meal!
Disney's Animal Kingdom Theme Park
If your youngest is tall enough to ride Avatar Flight of Passage (44 inches), it is a total must do. If another attraction is a better fit, It's Tough to be a Bug! is a fantastic 3D show where the Guests become honorary bugs.
Thanks so much for sharing your question with the Disney Parks Moms Panel. Please let me know if you need any other ideas as you plan your magical Walt Disney World Resort vacation!
Kari