I could really use some help getting a good rate in Tampa International Airport.

Hertz is preferred, but willing to go with a comparable. I can find lots of great rates at 'area' car rental locations, but I need the airport location. I will be arriving and departing after most have closed. Best rate I've found with Hertz is $41 a day ($564 incl. taxes). I did find Budget at $402 incl. taxes with my Entertainment card discount! Not sure I can do better, but would love to know if I can!

Pick up and drop off: TPA
Pickup date/time: : Friday, Jun 28, 2013 - 7pm
Return date/time: Tuesday, Jul 9, 2013 - 7pm
Car: Full size or similar (needs to fit 5 people)

I do not want to pay in advance.
I have AAA, Entertainment, Hotel/Airline Discounts.

Thanks in advance!