I'm surprised at comments on charging for sand removal etc that some companies do. Every time I've rented from Hertz they have told me to come in any time and they will vacuum the sand and wash the car for free. When in the area passing by we have taken them up on that since we are there for a long time and have never paid for it. It's amazing how dirty a car can get, especially the windshield, with the salt air, sand and wind environment.