I am taking my family to CA on vacation this summer and I am using miles for 4 RT tix, points for 10 nights hotel, parking lot points for free airport parking and am using Hertz Gold Points for a car rental. My question is, can I stack Hertz redemptions?

I booked a car for what turns out to be 9 full days and used a free week and am paying cash for the remaining 2 days. Is it possible to use additional points to cover the 2 additionals days?

Thanks in advance!