Let go and let the magic come through.
I know this is probably not what you were asking for. But the magic is different for everyone. And sometimes different on every trip.
Speaking to my experiences:
Two visits ago, it was experiencing WDW one last time with our (second set) of kids, who are college age. We probably won't go again with them until they have families of their own. They were reluctant to go, did it "for Mom." And we had a GREAT trip! They found out that, while they didn't want to experience WDW like they had done "as children," it still had a lot for them to enjoy.
Last visit, it was a solo trip for me, at a time that I REALLY needed a break from the pressures of everyday life. I won't bore you with the details - but that trip became a "reset" for me, a time to regain focus on what mattered, and what didn't.
Next visit - DH and I are taking the GKs. First time ever vacationing with DGD9, who is a Disney nut. Family dynamics have made things difficult at times, but this is our chance to set memories with two children that we love very much but don't have enough opportunities to connect with. I predict great things.
The rest of each vacay is all details. Important details, but details nonetheless. What brings us back time and again is the magic.