Hi everyone!

I just signed up for Hertz Gold Family Discount Program, in order to get the underage fee waived. A few days ago Delta sent me an email that there'll be bonus miles to rent in Hertz (link). When I quote from that website, the price is lowered but the underage fee cannot be waived.

Does anyone know if additional Promotional codes exists, to be combined with this Gold Family Discount Program? I am looking for ways to waive the underage fee and lower the base rate.

Any advice appreciated!