So our tickets will basically be linked to both sets of magic bands?
Once the tickets are linked to your MDE, all of your MBs can access the tickets.
To be clear, nothing is "linked to" or "put onto" any MB.
A MagicBand just contains (and weakly "transmits") a unique serial number that is used to access the information that is stored in your MyDisneyExperience computer file.
So, even if you were to lose a MagicBand, the info stays locked in your file.
Disney can just set up a new band (different serial number)
to access the info in your MDE file.
Disney can also issue ADDITIONAL MB's to a guest and each
additional band can be used for the same purposes as the first band.
So, yes, there can be multiple MB's per person, and each of them can be used by that person,
but their entitlements will all be common and identical.
The MagicBand works like the combination to a locked safe, or a key to a locked door.
The MB, itself, is not the file of info or the container of the info.
The MB just
unlocks the file of info, allowing it to be accessed from your MDE account when needed.