UPDATE: As of May 6th, eligible out-of-state guests are able to purchase tickets online. Previously, guests had to buy tickets at the gate only, but online is now an option.
And after an addendum was added to California’s Blueprint for a Safer Economy, specifying that “fully vaccinated persons from out of state may visit or attend activities or events that are restricted to in-state visitors,” there have been LOTS of questions about who can visit these reopened theme parks. Disneyland has already specified that out-of-state guests will not be permitted inside the parks, despite this addendum. But Universal Studios Hollywood is a different story.