Before the key is made
Many of the cars we see here belong to visitors: a family SUV from out of state packed for a week at the beach, a golfer's sedan in a course parking lot, a rental from the airport. Locals drive the same salty roads all year, and their keys and fobs take the sand and the humidity along with them, which is why worn blades and dead fob buttons are so common.
Have the registration or the rental agreement and your ID. Know the year, make and model and whether the car has push-button start. If the car belongs to a rental company, the company's rules come first, and some will want to handle the key themselves; we'll tell you on the call if that's the case, before anyone drives out.
You'll have a key made and programmed where the car is parked, tested on the doors, the trunk and the start, and, for anyone driving a long way home, a spare that turns the next lost key into a small problem instead of a stranded family. Keys that are gone for good can be removed from the car so they no longer start it. Rental and company cars are handled only with the right paperwork.