Other Car Rental Programs/Partners (ie. Alamo, Enterprise, Sixt) - Chances of getting a carseat at Enterprise in downtown SF?

They told me to call a few days in advance to reserve a carseat. Just how many carseats does Enterprise carry at these locations?

Have you considered just buying one of the least-expensive models at your favorite big-box retailer? They are all certified, regardless of price, and a one-week rental of the seat is about the same amount as the price (~$50).

Here's an example:

http://www.target.com/gp/detail.html/601-8897537-9111368?ASIN=B000PBZJHI&AFID=Froogle&LNM=B000PBZJHI|Cosco_Scenera_Convertible_Car_Seat_ Transatlantic&ci_src=14110944&ci_sku=B000PBZJHI&ref=tgt_adv_XSG10001