Four parties, solo. Just wow.
If you want ride photos, be sure to wear a band, even though you won't be using it for admission. You could also have Photopass photographers tap a band, so the pics will show up on your Memory Maker.
You're right, you don't have to link the four cards to your
MDE. But if you do, then the kiosk-booked phantom SDFP will show up on your MDE for convenient reference. And of course, the names will show up on the kiosk screen, helping you keep track of which sets of SDFP coordinate with which cards. Sharpie the phantom names in the upper right corner of the front of each card in big letters.
Moving forward, you might find it convenient to have four phantoms with cards on your MDE. Let's say your neighbor can't go to
MVMCP and wants to give you her ticket. She's already linked it to her MDE, so she can't just hand you the card. That card will stay on her profile forever. But Disney allows unlimited reassignment of tickets (before use, obviously). Let's say you don't want the ticket reassigned to your real profile because you do want the extra set of prebooked FP this time. You can just have her reassign the card to one of your phantoms - and because the phantoms have cards, you can access the entitlement of the MVMCP ticket. That scenario is obviously not likely to happen, but it's the sort of thing that can come up and make you glad you have phantoms with cards. Otherwise, you'd have to buy MagicBands to access MDE phantom entitlements.
The downside to linking the tickets to phantom profiles is that you won't be able to remove those profiles without calling guest services. Some people find it distracting to have extraneous profiles on their MDE. I rather like them, myself. One big happy family!
Enjoy those parties!!