Our $16/day rental in Jan '14 was from Alamo and they wanted, I think, $12/day for the Lovely Mrs Kal as an addtl driver. We didn't take it.
We rolled the dice but she only drove 2x. Shhhhhh

Okay KAL, I won't tell! Costco price includes the waiver of that extra driver fee so it is rebooked with them at $213 (includes all taxes and fees which are astronomical - almost doubles the price of the car rental) for 9 days... Everything is finally done, air, condo, car....I can breathe a sign of relief and start day dreaming of sitting on the lanai with cocktails watching the sun set.... .

Party on!