1. You can still get the 5% on Target.com. I purchased some this way in December. 2. A lot of folks have reported success purchasing Disney gift cards in store using Target gift cards while some others have encountered issues. There was a lot of activity around Christmas when Target sold Target gift cards for 1 day @ 10% off. I don't see any reason that the source of the Target gift card would matter unless it ends up being stolen, drained, or compromised in some other way. If you're going to take this approach, do it knowing that there is some amount of risk that you may end up with Target gift cards that you cannot flip for Disney cards. 3. Correct. In store, you can't apply the 5% to any purchase that is going to be covered with a gift card, regardless of the source of the gift card.