If you are flying in, there are car rentals and taxi's at the airport, also there are plenty of Taxi's available around town as well as Uber and lyft.
There are also bike rentals downtown , with lots of newly installed bike lanes, great for a little exercise and site seeing. There is also a free trolley downtown called Buzz, which is really convenient for getting around Downtown. There's plenty of parking downtown, there's also a few parking garages/areas, a 3 story one with some shade next to Fisherman's market, which is free, another behind Starbucks, not covered, also free, and I believe the Hyatt on Palm Cyn. offers some free parking underground as well. We can provide you with plenty of suggestions for places to visit, Museums, Movie Star's Homes, hiking, Restaurants, Nightlife, etc.