You will soon be able to purchase a MagicBand without linking it to a ticket
It looks like those wanting to purchase a MagicBand without linking it to a ticket will soon have their wish come true. Up until recently, you had to have a My Disney Experience account and a valid ticket to purchase a MagicBand. That policy will change on August 19 allowing guests to purchase MagicBand’s without linking them.
This will allow you to give the MagicBand as a gift or even for a future trip that you have not yet booked. This applies only to solid-color MagicBand’s, whereas printed and limited edition MagicBand’s will still require you to link them to a My Disney Experience account.
There will be a limit of 5 MagicBand’s per transaction. You can currently purchase MagicBand’s at all Walt Disney World parks, Downtown Disney, Disney’s Art of Animation Resort, Disney’s Contemporary Resort, Disney’s Pop Century Resort and Disney’s Port Orleans Resort. More are surely to follow!
via WDW Magic