You don't need 3 out of 4, there is no one that will tell you they've done it ... those ticket scanners will stop you cold.
Agree that I would keep your DHS day and if you truly don't think you can stay busy all day some thoughts:
- IF the fireworks continue to be shown at the time of your trip then consider a mid-day break then go back because they are AWESOME!
- IF you can also work them out with Fantasmic that may be fun as well.
- Consider a table service at DHS, they have a few great and highly imagineered ones, 50's Prime and Sci Fi are favorites. Take your time and enjoy!
- Mid day break to Boardwalk. Boat ride is relaxing. Walk the Boardwalk. Eat lunch or early dinner.
- Beaches and Cream may be fun for your kids. We just got reservations a week out. You are going busier time so may want to look sooner.
- Pool break at your hotel mid day.
- Or if not interested in evening stuff, perfect day for you do spend time elsewhere with no ticket needed.
- Disney Springs, could spend hours there shopping and having dinner.
- Miniature Golf, Cirque, Water Parks ....
- Plan a resort dinner, AKL has some great options, get there early in daylight and check out animals and resort.
- Honestly if I were doing a half day there, I would make it the second half to include evening stuff. Book FP+ later. Use that day to sleep in, have a nice breakfast at a resort, go to a water park etc.