And, since this thread seems to just go on and on...
it is the WDW resort reservation that triggers the Magic Bands being sent/offered.
Even if there are NO tickets purchased, a MB will be offered to every guest registered on the resort reservation.
That's because the MBs are used for room keys and "charging to the room" privileges.
Now, regarding TICKETS...
those come into play for booking advance FP+.
To book FP+ in advance, a guest must have purchased valid tickets (or APs.)
With or without a WDW resort stay booked, a guest with a valid park ticket can book
FP+ up to 30 days in advance.
WITH a WDW resort stay booked, a guest with a valid park ticket can book
FP+ up to 60 days in advance... and, during that same booking, make FP+ ALSO for each and every day of their resort stay (up to 14 days) as long as the guest has enough valid tickets
to cover the days that the FP+ booked.
So-
Resort stay = Magic Band
Tickets = FP+ booked up to 30 days in advance.
Resort stay + Tickets = MB and FP+ booked up to 60(+) days in advance.