I doubt the party atmosphere at the Van Nuys location endeared Dykstra to Lucas either. There's the old story about Lucas driving up to the warehouse with Fox bigwigs, and the whole water slide thing was going on.
Of course, there are no ice planets in any other science fiction tale. It's a wonder the Frank Herbert estate didn't sue over Tatooine and all the references to "spice". Of course, nobody knew thirty years ago Anakin was going to become Kwisatz Haderach. ;)