Originally Posted by
DJMeatBall
FWIW, in general the only way you can use discount coupons (e.g. PC numbers) is if you rent and return at the same location.
So one thing you could do is ride BART out to the airport and pick up there.
Due to recent Southwest Hertz promos, I've been renting cars at Marriott LAX and returning them to the LAX corporate location. I have had no trouble with the PCs being used. I also have used various PCs for HLE locations to SFO without PC issues. I recently rented in San Juan using a PC with hotel pickup and airport drop off. There was a problem. Instead of saving $5, it knocked $15 off my one day price

I am not aware of this "general rule"