Hertz - CPD & CP combined?

Sorry for cross-posting, but this an urgent one.

I have a CP for the under-age waiver fee and a CPD for a 10% discount. Will be this combination accepted? I read in the terms that promotions can't be combined.

Once I asked them the same question cuz I want to use the age differential waiver PC and the Delta CDP, and they said it's OK to combine these two.

If the reservations system accepts it, then no problem.

If the reservations system rejects it, then you still may be able to add one at the counter.

Sure. When I was under 25, I always used the AAA CDP and Underage PC. Now that I'm older, I use the AAA CDP with a $ off coupon.

Sure you can combine the two. But unless you're earning some other type of points, you can probably do a lot better than a 10%-discounting CDP. Most of the airline CDPs do 20-40%. As chen5371 said you can combine them without issue. I've done that several times, but now I use the USAA CDP which inherently waives the age differential, and allows me to use other PCs :)

-J.