A few things have changed. Firstly, there are other and codes such as 1908469 ([as listed here http://www.dansdeals.com/archives/13847)There is also a coupon code to waive the underage fee PC# 144314 which can probably be combined with any corporate code....
even though that pc code is from hertz's own site, online doesn't show the underage waived fee
True!and Hertz mentions that on this promotion page, indicating that the fee will be on the reservation and deducted by the counter... https://www.hertz.com/rentacar/q-8010640/save-up-to-$25-a-day-if-you-re-20-24-years-old-special-offer"Just include PC# 144314 in your reservation... The Young Renter Fee may appear on your reservation confirmation, but will be deducted at time of rental...."
are you sure that it will work with any cdp?
1,000,000% sure!