I haven't been able to read the whole thread, but I haven't found anything via the search function that answers this question, so hopefully I'm not being overly repetitive.
I'm travelling with my extended family, husband, and 5 kids. Our 2 year doesn't require a ticket, but we'd like for her to have a MagicBand. That's primarily because she will inflict upon everyone at DisneyWorld the sort of tantrum only a 2 year old is capable of if everyone else gets to use one and she doesn't, lol, but also because she's a bit of a "bolter" and while we obviously intend to NOT lose her... stranger things have happened.
However, since she's only 2 and doesn't need a ticket, her Magicband will not be activated, right? What does that mean, exactly? Will the tracking feature work? Will she be able to participate in the interactive games/activities?
Some of our extended family are only joining us for the first day of our two-week trip. If they were to give her their MagicBand after that first day, would that change anything? Ie, could their bands, linked to used/expired tickets, allow her to participate in interactive games and be tracked should she escape?
I realize this is a bit of a weird scenario; hopefully you (or someone else) is able to help me out here!

Thanks!