I started taking DS on solo trips when he was 4, took DD when she was 4 last year as well.
While I love our family trips, there is truly something special about the trips where it has been just one-on-one with DS or DD. 2 people can be so flexible, it’s almost liberating in a way. Everything is easier... dining is easier to book, FPs are easier to make. Plus the ability to really be in the moment, enjoying the small things about WDW.
Tips? No real tips from me, just wanted to say have fun and enjoy!
Although my one tip... we had dropped the stroller at 5, but I would still rent one at the front of Epcot just to get more ‘mileage’ at that park.