Yes, you need to have tickets linked to your
MDE account to make FP+ reservations. If you want to make them at the 60 day mark, you also need to have an on site resort reservation linked to your MDE account. (
DVC resorts qualify).
The owner of the points needs to add the dining plan at least 48 hours in advance and it must be paid for in full when it's added.
You can make ADRs yourself whenever your window opens.