There are several lots nearby, 2 on K Street between 15th and 16th, these are behind the theater with good access and short walk. There are also lots at 13th and J as well as at the Hyatt across the street. You can also go to City of Sacramento Parking to reserve meters on the street and they have the memorial garage as well, a bit longer walk.
Jonathan said it all.
There are public parking areas all around there but you have to pay
Hotel next door, drive up to the top floor take your ticket with you, as you will pay when you are going back to your car. ATM type machine to pay on bottom floor near elevator.
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