Reading through what I believe is the Disney DVC Facebook group I stumbled across this post by a David Resende
" ... Just so everyone understands the new policy regarding spending with your magic bands. For those especially who use discounted Disney gift cards purchased at Target, etc...please be advised. Now they take a credit card on file and immediately debit "pending" on the card $100.00. Once you spend over 100.00 dollars they deduct that amount from the deposit held and will either "pend" an additional 100.00 or if you purchased more that 100.00 on the first monies held, they will charge that amount to the card and they pend an additional 100.00. Ex: 100.00 lender upon arrival. Dinner and park purchase 180.00. They charge 180.00 to your credit card and pend an additional 100.00 for future purchases. I used to go down before check out and pay off all or most of my tab with Disney Gift cards. But now you will have to call them daily or every other day and give them the Disney gift cards to prevent your spending from being charged to your credit card. And, no...you cant just give them the Disney cards up front, say on the day of arrival for a credit on your account. They wont do that. ..."
Reading through the comments it seems
1) This went into effect on Feb 27
2) Seem the consensus is 5 days is the actual limit.So the answer is to stop by the front desk more often to pay down your bill if you are going to use gift cards.
As always, your mileage and results will vary