Karen
I generally tip each time the valet brings me my car.
Donna
I tip each time with valet service because it always seems to be different
employees taking or giving me my car, and I usually have no idea how they
handle tips -- whether the individuals keep them or whether they have a pool
to combine them.
In cases where it's been the same person assisting me (e.g. a concierge, one
particular housekeeper, etc.), I wait and tip at the end of my stay.
Cindy
I tip each time they pickup or drop off the car. I consider it a small
investment to avoid door dings and insure prompt service.