I have a similar question:
I will be traveling solo, and I have a 5 day parkhopper. I am spending 5 nights at Pop Century, and then I am moving to an offsite hotel for 2 additional nights. I wasn't planning on doing a Disney Park on the last full day at the offsite hotel. However, since all the Frozen stuff popped up at DHS, I am now thinking that it would be fun to spend one more day in the parks.
My question is this. I know that I can add a day to my ticket. However, once that is done,
1. will my ticket still be on my Magic Band,
2. and will the Magic Band still work to get me into the park once I am no longer an onsite guest?
1. Yes. (So to speak.
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2. Yes.
Guests can use MBs even if not staying on WDW property.
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Just to keep things as clear as possible-
There is no reservation info, or ticket info, or credit card info,
or FP+ info "put onto" a MagicBand.
The MagicBands just contain 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.
The MagicBand works like the combination to a locked safe, or a key to a locked door.
Why does this distinction matter?
Because there is so much fear about losing bands and,
in turn, losing all of a guest's information thought to be on the band.
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.