Christmas is one of the worst times for a car rental! I always book my car in January before just as the rates come out and before they crank them up. I just check Endicia and Travelocity on your dates and even the Economy cars are going for over $400 per week! Yikes!
Do you have an American Express card? Can you get one? Mousesavers has a good code for National here:
http://www.mousesavers.com/national.html
I just plugged in the Amex Code 5125601 into National for
your dates and got this:
Base Rate - Fullsize (USD)
(1) Time & Distance ($161.94/Variable) $161.94
Rate/Product Code B39401
Contract ID 5125601
Inclusive Rate Items
Guaranteed Base Rate Included
Unlimited Miles Included
For information on coverage products, ex:Loss Damage Waiver(LDW) click here Subtotal $161.94
Primary Driver Help Info Of age primary driver (25 or older)
Underage primary driver (age 21 - 24) ($10.00/day) $0.00
Taxes, Surcharges and Fees Help Info
Concession Fee Recov Chrg 9.8 Pct $16.13
Tire/battery Fee .05/day $0.30
Florida Surcharge 2.00/day $12.00
License Recoupment Fee .39/day $2.34
Sales Tax (6.50%) $12.53
Subtotal $43.30
Calculate Estimated Total Estimated Total $205.24