I tip both, but I tip the car attendant a little less. For one hotel stay, I'm tipping 4 times -- once to the person who unloads the car, once to the person who brings our bags to the room. When leaving, there's the person who brings our bags down and then the person who loads the car back up. For a split stay, we're looking at tipping 8 times. My DH and I always really help the guy with unloading and reloading the car, so I think less than $10 is sufficient for that part. I wish the same person did everything, but I understand that it's probably more efficient for the resort to have different people handling different things.