Hi Connie,
I'm so pleased you like the panel, I hope we're helping you with your trip planning!
The rider switch/child swap can seem a little confusing and the best way to understand how it works is to watch a video that Disney Mom Michelle made, you can find it by clicking
HERE, it's currently on page 4. I think she explains it brilliantly and much better than I could with just written words!
As for the Fantasmic Dining Package when we did it last we were given a special ticket during our meal, it listed how many were in our party and the date the ticket was valid for. Once you get to the front of the Fantasmic line give the Cast Member (Disney employee) the ticket and they'll allow you access to the reserved seating.
If you have any more questions please ask again and have a great trip,
Jo