Not sure if this is the best thread. Please move as needed.

Planning on purchasing 2 RTW tickets using AA desk. I would like to use multiple credit cards for minimum spend benefits.

1. Is the AA RTW desk similar to AA.com where only one credit card can be used? If yes, can I use a credit card and gift card?

2. Also, can AA vouchers be used with these 2 forms of payment?

Thanks