What is the valet button in glove box a 1995 cadillac for?

In a 1995 Cadillac, the button in the glove box labeled "valet" disables certain features of the car to protect it when given to a valet. Specifically, it limits access to the trunk and may also limit the car's top speed or radio functions. The exact limitations varied slightly depending on the Cadillac model and options package. The intention is to prevent the valet from accessing personal items or damaging the car.