Originally Posted by
RobertS975
You can apply two or three electronic credits with the balance on a credit card. As far as I know, you cannot apply multiple credit instruments on a single ticket, ie. an Amex gift card and a credit card.
I would try to use the Amex gift card first. It should recognize that there is, say, $100 in credit and then ask for additional payment, just like an e-credit. You can always try it. You don't have to pay until the very end when you are satisfied with the whole transaction.