There's no getting around the fact that the large auditoriums and mandatory monthly meetings have this cult-like, megachurch vibe to it. It isn't helped by the fact that people talk about "Epic Culture" and "What it means to be Epic". It's cool if you're crazy about team spirit, but overall pretty weird. There becomes this strange spectrum that hovers around 3 groups: Kool-Aid Drinkers, the Just Here to Work, and the Constantly Cringing.
They pretty much have a policy of push as much work onto a person as they can until that person learns to say No. My boss respected my no, but it took me almost 2 years of 55+ hour weeks to learn that I could say that. After that, I stuck to 40-45 hours/week 90% of the time.
The level of feedback wasn't that present so I spent a lot of time spinning around in imposter syndrome until I realized I was doing fine.
A lot of the technologies are outdated or specific to Epic, which is unfortunate. They're doing their best to update, but as a large company, it's difficult for them to navigate transitioning to better tech with all the demands of satisfying so many customers.