Ok, I called and found out about the gift voucher. Store credit can be used to purchase gift vouchers, which in turn can be used anywhere in the world and by whoever that has it. However, here's the part I don't understand. They told me that if I use a gift voucher, I still have to pay upfront first and then Hermes Corporate will reimburse me afterwards because I guess they need to verify the credit is valid? Anyone heard of this before? Why would anyone buy gift vouchers if it's going to be such a hassle to use?