It is recommended to rent a car while visiting Calabasas as many of the attractions are spread out and public transportation is limited. There are several car rental companies located at the Los Angeles International Airport, which is approximately a 35-minute drive from Calabasas. The cost of renting a car can vary but generally starts at around $30 per day. It is also important to consider the cost of parking at the different destinations.
If you have additional time, you might consider visiting the Santa Monica Pier or taking a day trip to the city of Santa Barbara, both of which are a couple of hours' drive away. If you have less time, you may want to prioritize the outdoor activities over the museums and shopping. It is also recommended to check the weather forecast and plan accordingly, as temperatures can vary greatly from morning to evening.