Realistically you don't need to know what happened in Westview entirely to dot it together. It's good for completing her story and for better understanding, but it's not *necessary* if that makes sense? Friend saw it without watching Wandavision and liked it still, realised what was happening pretty quickly. Not saying everyone's like that obviously, but still...
AlsoNEW FANTASTIC 4 WHEN, FAIGE?!?!?!?!
Really? End of Endgame she is a grieving "ex"-Avenger and then we start DS 2 and she has an evil book, she has kids in the multiverse and she's corrupted. People might enjoy the film regardless of Wandavision but I can't see how anyone would understand what's happened from Endgame.
We're also getting an F4 film.