To mimic sitcom filming, the first episode of WandaVision filmed in front of a live studio audience over a span of two days. Even other cast members and the crew participated in the experience with Parris being a part of the live audience and the crew dressing in period clothing.
"It was so nerve-wracking, and there was a lot of adrenaline," Olsen said in a press conference. "There were a lot of quick changes, and it totally confused my brain. The idea of not playing for an audience, but feeding off an audience, and having a camera . . . I was really grateful when we added the fourth wall for the second episode." Trusting Shakman and knowing if she was a failure, he would let her reshoot it the next day was what got her through it, she told BuzzFeed. Similarly, Bettany was terrified, having not been on stage in 20 years.