Is it possible to link different credit cards to different magic bands when I check in? I was hoping for a way to let my oldest be responsible for his own spending money without having to carry a wallet/gift card. Or can I connect his band to my card but set a spending limit? What are the best ways you have found for allowing children their own spending money? (He will be a few months shy of 6, but has been using his own money for toys and treats when we go out for the past couple years.)