Yes, we rent from the Car Care Center all the time. Pick up at airport and drop off at CCC and vice versa. Their bus will pick you up just about anywhere on the property, including the parks. I have to say the people there haven't been the friendliest....I guess they are anti-CM's or something.
Rental person is banging away feverishly on her keyboard, apparently writing my life history or something. I politely ask,
"Oh, and could I get a car seat for a 3 year old as well, please?"
(huff...rolls eyes...stares at me like I just called her mother a name) "Well I wish you would have said that earlier so I could have had her get two of them" (referring to the other clerk who just came back with a seat for another customer) "Well now I have to go back there and get you one, so you're gonna have to wait!"
Now THAT'S friendly service, friends!!
See what happens then you take out the DVC Guide who used to sit in there?? Not a speck of Disney Magic left.