Originally Posted by fly-yul
Nope. This is a limitation of the res system. You can however sometimes get the rental counter agent to honor the extra coupon anyway.
The computer is set up only have one place to put in a pc number so more than one is nearly impossible. Customer service certificates can be combined with pc numbers though. Sometimes the CSR will honor the second pc depending upon what it is for and what the situation is at that particular rental location. If you are a Gold Member you have a much better shot at using more than one pc.