When do you add the discount code?
It’s the same with your free $$ gift card on the free dining offer, get you in the shop to spend the $$ quickly! Take my advice grab the gift card and put it towards your room bill for tips!!!
We had the free bands in April and they have to be redeemed when in Florida. Ours could only be collected from Disney Springs store (annoyingly - we did try with guest relations in the Park but they wouldn't budge) so plan a visit there early in your trip.
Great deal for those staying off-site, saves you at least $15 pp. I wonder how they are sending them? Usually not available to buy at all outside the US