I may have this wrong (I have only been to The World once last August) but I think the following may be true:
Anyone can have a photo card that photos can be assigned to. After your trip you can link them together, view pictures and then order the CD/prints etc.
The Magic package includes ride photos (and photos at the entrance to some dining locations) so if you want these you need to get the package or buy them separately - we love ride photos so this was a major plus for us! We also got a cd full of stock photos which was a nice extra - not sure if they still add that. We also got "magic" shots.
The magic package is more expensive if purchased when there. I am about confused about the three day as I think you can still have the normal card and link these later but maybe you don't get the ride photos? We ordered it in advance last year, but it was called photopass+.
For us we loved having it - we got so many fab shots - the photographers took pictures of character interactions and not just the posed shot.
I think my only negative towards the new Magic package is that it is linked to the band and so photographers won't know by looking who has it - we had lots who saw our card on our lanyard thing and offered/called us over for pics. It is a plus however not having to worry about losing another thing though!
I hope this info is correct and not confusing!
