I would honestly take the train and get off at 7th/Metro. If you have to park, use a lot on 4th or 6th. Sometimrs you can also find street parking. Hope this helps!
Pershing square is closer to artwalk than 7th
You should take the Metro, the place is always crowded.
Traffic is crowded with pedestrians and cruisers during Art Walk, so even buses are slow. If you're coming to DTLA from South or West, park and ride on the Blue or Expo train lines from LATTC at the closest. If you're coming from North or East, park and ride on the Gold train line from Chinatown at the closest, and transfer to Red our Purple subway trains at Union Station. Pershing Square and 7th & Metro stations are both close to the Art Walk path.
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